CN113464651B - Differential pressure sensor combined sealing structure - Google Patents
Differential pressure sensor combined sealing structure Download PDFInfo
- Publication number
- CN113464651B CN113464651B CN202110888315.4A CN202110888315A CN113464651B CN 113464651 B CN113464651 B CN 113464651B CN 202110888315 A CN202110888315 A CN 202110888315A CN 113464651 B CN113464651 B CN 113464651B
- Authority
- CN
- China
- Prior art keywords
- ring
- oil supply
- supply end
- sensor
- groove
- 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.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 32
- 238000009434 installation Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 57
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
- G01L13/06—Devices or apparatus for measuring differences of two or more fluid pressure values using electric or magnetic pressure-sensitive elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a differential pressure sensor combined sealing structure, which relates to the technical field of mechanical sealing and comprises a sensor shell, an oil supply end, a mounting ring, a check ring and an O-shaped sealing ring, wherein an internal thread is formed in the inner side of the mounting ring; the cross section of the check ring is in a circular shape, the longitudinal section of the check ring is rectangular, the check ring is arranged in the groove, the outer diameter of the O-shaped sealing ring is slightly smaller than the outer diameter of the check ring, the installation angle of the sensor is adjusted only by adding adjusting pads with different specifications at the oil supply end in the prior art so as to avoid the installation interference problem of an oil return pipeline and a cable, and the adjusting pads are easy to deform, so that the sealing between the adjusting pads and the sensor shell is unreliable and oil leaks.
Description
Technical Field
The invention relates to the technical field of mechanical sealing, in particular to a differential pressure sensor type sealing structure.
Background
The engine lubricating oil pressure difference sensor senses the pressure at two ends of oil supply and oil return simultaneously, and the electric connector outputs a pressure difference electric signal through the conversion of an internal core body. The sensor oil supply end is installed to the engine accessory case through threads, the oil return end is connected with an oil return oil way through a pipeline, the electric connector is connected with an engine cable, and after the sensor is assembled, the oil return pipeline can interfere with the cable.
The existing sensor seals the oil supply end through the rubber ring, and the installation angle of the oil return pipeline and the cable is adjusted through adding an adjusting pad at the oil supply end, so that interference is avoided.
The disadvantage of the prior art is that the added adjusting pad is easy to deform after being installed and used, resulting in poor sealing and oil leakage.
Disclosure of Invention
The invention provides a differential pressure sensor type sealing structure which is applied to sealing of an oil supply end of an engine lubricating oil differential pressure sensor and solves the problem of interference between an oil return pipeline and a cable so as to overcome the defects in the prior art.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a pressure difference sensor combination formula seal structure, includes sensor casing, oil feed end, collar, retaining ring and O type sealing washer, the internal thread has been seted up to the collar inboard, the recess that sets up with the collar coaxial is seted up to collar one end, the recess is annular structure, the recess diameter is less than the collar external diameter; the cross section of the check ring is circular, the longitudinal section of the check ring is rectangular, the check ring is arranged in the groove, and the outer diameter of the O-shaped sealing ring is slightly smaller than the outer diameter of the check ring;
the mounting ring, the retainer ring and the O-shaped sealing ring are sequentially sleeved at the oil supply end, the mounting ring is in threaded connection with the oil supply end, one face of the mounting ring deviating from the groove is attached to the sensor shell, the contact part of the oil supply end, the retainer ring and the O-shaped sealing ring is a smooth face, the external threads are formed in the outer wall of the oil supply end along the outer wall of the oil supply end, at the end, far away from the sensor shell, of the oil supply end, and the sensor oil supply end is installed in an engine accessory casing through threads.
Further: the inner diameter of the retainer ring is the same as the inner diameter of the mounting ring, the outer diameter of the retainer ring is the same as the diameter of the groove, and the thickness of the retainer ring is the same as the depth of the groove.
Further: the oil supply end is fixedly connected to the bottom of the sensor shell, the top of the sensor shell is provided with an oil return end used for being connected with an oil return pipeline, the oil supply end, the oil return end and the sensor shell are communicated, and the oil return end is fixedly connected with the oil return pipeline.
Further: the sensor shell top is provided with the electric connector that is used for connecting the cable, electric connector and cable fixed connection.
The invention has the beneficial effects that:
the invention is compared with the prior art, the invention only adds the adjusting pads with different specifications at the oil supply end, adjusts the installation angle of the sensor to avoid the installation interference problem of an oil return pipeline and a cable, but lacks the installing ring and the retaining ring, the adjusting pad is much thicker than the O-shaped sealing ring, and after installation, the adjusting pad is easy to deform, so that the sealing between the adjusting pad and the sensor shell is unreliable and oil leaks; according to the invention, the mounting ring and the retainer ring are designed, so that a good supporting effect is achieved on the O-shaped sealing ring, the thickness of the O-shaped sealing ring is reduced, and the retainer ring is embedded in the mounting ring, so that the O-shaped sealing ring is not easy to deform after being mounted, the problem of sealing an oil supply end of the sensor is well solved, and the problem of mounting interference of an oil return pipeline and a cable can be avoided.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic view of the mounting structure of the present invention;
FIG. 2 is an exploded view of the combined seal structure of the present invention;
FIG. 3 is a schematic diagram of a differential pressure sensor mounting interference area.
In the figure: 100. a mounting ring; 101. an internal thread; 102. a groove; 111. a retainer ring; 112. an O-shaped sealing ring; 200. a sensor housing; 201. an oil supply end; 202. an electrical connector; 203. an oil return end; 211. an external thread; 301. a cable; 302. an oil return pipeline; 400. an engine accessory case;
A. 270 ° non-interference region; B. a 90 interference region; l, mounting ring thickness.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, a preferred embodiment of the present invention provides a differential pressure sensor combined sealing structure, which comprises a mounting ring 100, a retainer ring 111 and an O-ring 112, wherein an internal thread 101 is provided on the inner side of the mounting ring 100, a groove 102 coaxially provided with the mounting ring 100 is provided on the axial direction of the mounting ring 100, the groove 102 is in an annular structure, the diameter of the groove 102 is smaller than the outer diameter of the mounting ring 100, the cross section of the retainer ring 111 is in a circular shape, the longitudinal section of the retainer ring 111 is rectangular, the retainer ring 111 is installed in the groove 102 and is embedded with the groove 102, preferably, but not limited, the inner diameter of the retainer ring 111 is the same as the inner diameter of the mounting ring 100, the outer diameter is the same as the diameter of the groove 102, and the thickness is the same as the depth of the groove 102; the outer diameter of the O-ring 112 is slightly smaller than the outer diameter of the retainer ring 111.
The combined sealing structure further comprises a sensor shell 200 and an oil supply end 201, wherein the oil supply end 201 is fixedly connected to the bottom of the sensor shell 200, an oil return end 203 used for being connected with an oil return pipeline 302 is arranged at the top of the sensor shell 200, the oil supply end 201, the oil return end 203 and the sensor shell 200 are communicated, the prior art is not repeated, and the oil return end 203 is fixedly connected with the oil return pipeline 302; the top of the sensor housing 200 is further provided with an electrical connector 202 for connecting the cable 301, the electrical connector 202 being fixedly connected with the cable 301.
In this embodiment, the mounting ring 100, the retainer ring 111 and the O-ring 112 are sequentially sleeved on the oil supply end 201, the mounting ring 100 is in threaded connection with the oil supply end 201, one surface of the mounting ring 100, which is away from the groove 102, is attached to the sensor housing 200, the contact part between the oil supply end 201 and the retainer ring 111 as well as the O-ring 112 is a smooth surface, the external thread 211 is provided along the outer wall of the oil supply end 201 at one end of the oil supply end 201, which is away from the sensor housing 200, and the sensor oil supply end 201 is mounted on the engine accessory case 400 through threads.
The thickness of the mounting ring 100 is L, and the mounting rings 100 with different thicknesses are selected according to the requirement during mounting so as to adjust the mounting angle of the oil return pipeline 302 and the engine cable 301 in the mounting state and avoid interference; the sealing of the sensor oil supply end 201 is realized by the retainer ring 111 and the accessory casing compression O-shaped sealing ring 112, and the function of the mounting ring 100 is to fix the retainer ring 111.
Because the sensor is mounted on the engine accessory case 400 through the external thread 211 of the oil supply end 201, after the sensor is mounted and screwed, the mounting angle of the sensor is not fixed, as shown in fig. 3, if the angle of the electrical connector 202 is located in the area a (90 ° interference area) after the sensor is mounted, the electrical connector 202 is located near the oil return pipeline 302, so that the cable 301 and the oil return pipeline 302 interfere; if the angle of the electrical connector 202 is in zone B (270 ° non-interference zone) after the sensor is installed, the electrical connector 202 is far away from the return line 302, and the cable 301 does not interfere with the return line 302.
The pitch of the mounting thread of the sensor oil supply end 201 is L0, for example, the mounting ring 100 has two thicknesses L1 and L2, and the absolute value of the difference between L1 and L2 is designed to be half of the pitch L0, where the formula is: if the mounting ring 100 with a certain thickness causes the mounting angle to be in the 90 interference area, after the mounting ring 100 with another thickness is replaced, the mounting angle of the sensor can be in the 270 non-interference area, so that the interference problem of the cable 301 and the oil return pipeline 302 is solved.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A differential pressure sensor-based seal structure comprising a sensor housing (200) and an oil supply end (201), characterized by further comprising: a mounting ring (100), a retainer ring (111) and an O-shaped sealing ring (112);
an internal thread (101) is formed on the inner side of the mounting ring (100), a groove (102) which is coaxially arranged with the mounting ring (100) is formed at one end of the mounting ring (100), the groove (102) is of an annular structure, and the diameter of the groove (102) is smaller than the outer diameter of the mounting ring (100);
the cross section of the check ring (111) is circular, the longitudinal section of the check ring (111) is rectangular, the check ring (111) is arranged in the groove (102), and the outer diameter of the O-shaped sealing ring (112) is smaller than the outer diameter of the check ring (111);
the mounting ring (100), the retainer ring (111) and the O-shaped sealing ring (112) are sequentially sleeved on the oil supply end (201), the mounting ring (100) is in threaded connection with the oil supply end (201), one surface of the mounting ring (100), which is away from the groove (102), is attached to the sensor shell (200), the contact part of the oil supply end (201) with the retainer ring (111) and the O-shaped sealing ring (112) is a smooth surface, one end, far away from the sensor shell (200), of the oil supply end (201) is provided with external threads (211) along the outer wall of the oil supply end (201), and the oil supply end (201) is installed on the engine accessory casing (400) through threads.
2. A differential pressure sensor-based seal according to claim 1, characterized in that the collar (111) has the same inner diameter as the inner diameter of the mounting ring (100).
3. A differential pressure sensor-based seal according to claim 2, characterized in that the collar (111) has an outer diameter which is the same as the diameter of the groove (102).
4. A differential pressure sensor-based seal according to claim 3, characterized in that the collar (111) has the same thickness as the groove (102) depth.
5. The differential pressure sensor type sealing structure according to claim 1, wherein the oil supply end (201) is fixedly connected to the bottom of the sensor housing (200), an oil return end (203) for connecting with an oil return pipeline (302) is arranged at the top of the sensor housing (200), the oil supply end (201), the oil return end (203) and the sensor housing (200) are communicated, and the oil return end (203) is fixedly connected with the oil return pipeline (302).
6. The differential pressure sensor-based seal structure according to claim 5, wherein an electrical connector (202) for connecting a cable (301) is provided on the top of the sensor housing (200), and the electrical connector (202) is fixedly connected to the cable (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110888315.4A CN113464651B (en) | 2021-08-03 | 2021-08-03 | Differential pressure sensor combined sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110888315.4A CN113464651B (en) | 2021-08-03 | 2021-08-03 | Differential pressure sensor combined sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113464651A CN113464651A (en) | 2021-10-01 |
| CN113464651B true CN113464651B (en) | 2023-11-03 |
Family
ID=77883937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110888315.4A Active CN113464651B (en) | 2021-08-03 | 2021-08-03 | Differential pressure sensor combined sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113464651B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201672181U (en) * | 2010-06-07 | 2010-12-15 | 瑞立集团有限公司 | Motor vehicle threaded baffle ring airtight sealing joint |
| CN204879146U (en) * | 2015-08-06 | 2015-12-16 | 广东贝林能源设备有限公司 | Oiling machine pipeline connecting structure |
| CN210571163U (en) * | 2019-08-07 | 2020-05-19 | 曲阜天博汽车零部件制造有限公司 | Engine oil pressure sensor |
| CN212429723U (en) * | 2020-04-13 | 2021-01-29 | 上海美续测控技术有限公司 | Sealing structure of differential pressure transmitter shell |
| CN212807254U (en) * | 2020-09-11 | 2021-03-26 | 第一拖拉机股份有限公司 | Positive pressure type oil tank fuel sensor assembly |
| CN113137527A (en) * | 2021-05-27 | 2021-07-20 | 广东韶钢松山股份有限公司 | Sealing joint |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2331852A2 (en) * | 2008-10-03 | 2011-06-15 | Federal-Mogul Corporation | Compression sensor gasket and method of construction |
| DE102019122624B3 (en) * | 2019-08-22 | 2020-09-17 | Sick Ag | Process connection with an annular molded seal |
-
2021
- 2021-08-03 CN CN202110888315.4A patent/CN113464651B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201672181U (en) * | 2010-06-07 | 2010-12-15 | 瑞立集团有限公司 | Motor vehicle threaded baffle ring airtight sealing joint |
| CN204879146U (en) * | 2015-08-06 | 2015-12-16 | 广东贝林能源设备有限公司 | Oiling machine pipeline connecting structure |
| CN210571163U (en) * | 2019-08-07 | 2020-05-19 | 曲阜天博汽车零部件制造有限公司 | Engine oil pressure sensor |
| CN212429723U (en) * | 2020-04-13 | 2021-01-29 | 上海美续测控技术有限公司 | Sealing structure of differential pressure transmitter shell |
| CN212807254U (en) * | 2020-09-11 | 2021-03-26 | 第一拖拉机股份有限公司 | Positive pressure type oil tank fuel sensor assembly |
| CN113137527A (en) * | 2021-05-27 | 2021-07-20 | 广东韶钢松山股份有限公司 | Sealing joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113464651A (en) | 2021-10-01 |
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