Sealing structure of corrosion-resistant pressure transmitter

Abstract

The utility model discloses a sealing structure of a corrosion-resistant pressure transmitter. Comprising a pressure transmitter mechanism, and the lower part of the pressure transmitter mechanism is connected with a sealing mechanism; the sealing mechanism comprises a connecting pipe, an inserting groove is formed in the upper end of the connecting pipe, limiting circular rings are arranged on the inner walls of the upper end and the lower end of the connecting pipe correspondingly, the outer sides of the limiting circular rings are sleeved with first sealing rings, and the upper end of the connecting pipe is connected with a first T-shaped sealing ring and a second T-shaped sealing ring. A second sealing ring is arranged in the insertion groove; the bottom end of the sealing mechanism is connected with an adapter pipe, a first limiting groove is formed in the outer wall of the upper end of the adapter pipe, a wall-attached sealing ring is arranged at the upper end of the adapter pipe, and a buffering wall is arranged on the inner wall of the wall-attached sealing ring. According to the utility model, the connection between the pressure transmitter mechanism and the adapter pipe is realized through the sealing mechanism, so that the sealing performance of the pressure transmitter is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure transmitters, and in particular relates to a sealing structure of a corrosion-resistant pressure transmitter. Background Art

[0002] A pressure transmitter is a device that converts pressure into a pneumatic or electrical signal for control and remote transmission. It converts the physical pressure parameters of gases, liquids, etc. sensed by the pressure measuring element sensor into a standard electrical signal (such as 4-20mADC) to supply secondary instruments such as indicator alarms, recorders, and regulators for measurement, indication, and process control.

[0003] Pressure transmitters are the most commonly used sensors in industrial practice. They are widely used in various industrial automatic control environments, involving many industries such as water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemicals, oil wells, electric power, ships, machine tools, pipelines, etc.

[0004] When the pressure transmitter is in use, it is necessary to maintain sealing to prevent liquid or gas leakage and improve detection stability.

[0005] However, there are some problems with the existing technology: the sealing structure of the existing pressure transmitter is only a simple connection when in use, or a sealing gasket is added, which easily causes liquid or gas leakage. Therefore, we propose a sealing structure for a corrosion-resistant pressure transmitter. Utility Model Content

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a sealing structure for a corrosion-resistant pressure transmitter, which connects the pressure transmitter mechanism and the transfer tube through a sealing mechanism, thereby improving the sealing performance of the pressure transmitter.

[0007] The utility model is implemented as follows: a sealing structure of a corrosion-resistant pressure transmitter comprises a pressure transmitter mechanism, the lower portion of the pressure transmitter mechanism is connected to a sealing mechanism;

[0008] The sealing mechanism includes a connecting pipe, an insertion groove is formed at the upper end of the connecting pipe, and limiting rings are fixedly provided on the inner walls of the upper and lower ends of the connecting pipe, and a first sealing ring is sleeved on the outer side of the limiting ring. A first T-shaped sealing ring and a second T-shaped sealing ring are connected to the inner and outer sides of the upper end of the connecting pipe, respectively, and a second sealing ring is provided inside the insertion groove;

[0009] The bottom end of the sealing mechanism is connected to a transfer tube, the outer wall of the upper end of the transfer tube is provided with a first limiting groove, the upper end of the transfer tube is provided with a wall-adhering sealing ring, the bottom end of the wall-adhering sealing ring is connected to the upper end surface of the transfer tube through a T-shaped block, and the inner wall of the wall-adhering sealing ring is provided with a buffer wall.

[0010] Specifically, the pressure transmitter mechanism includes an electrical housing, both ends of the electrical housing are provided with cable tubes, and one side of the electrical housing is fixedly provided with a display screen.

[0011] Specifically, a pressure detector is provided at the bottom of the pressure transmitter mechanism, an insertion ring is fixedly provided at the lower part of the pressure detector, the insertion ring is snap-connected to the inside of the insertion groove, and the second sealing ring is attached to the bottom of the insertion ring inside the insertion groove.

[0012] Specifically, a fitting ring is provided at the bottom of the pressure detector, the fitting ring is located on the inner side of the insertion ring, and the outer wall of the fitting ring fits against the inner wall of the upper end of the connecting tube.

[0013] Specifically, a second limiting groove is formed at the bottom end of the fitting ring, and the limiting rings and the first sealing ring at the upper and lower ends of the connecting pipe are respectively engaged in the second limiting groove and the first limiting groove.

[0014] Specifically, a first rotating nut is fixedly provided on the upper end of the connecting pipe, and a plurality of heat sinks are fixedly provided at equal intervals on the connecting pipe.

[0015] Specifically, the two ends of the adapter tube are respectively provided with a first threaded tooth and a second threaded tooth. The adapter tube is threadedly connected to the bottom inner wall of the connecting tube through the first threaded teeth. The upper end of the wall-adhering sealing ring is attached to the inner wall of the connecting tube. A second rotating nut is fixed on the adapter tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] When the utility model is in use, the sealing mechanism realizes the connection of the pressure transmitter mechanism. In order to improve the sealing performance of the connection, the insertion ring at the bottom of the pressure detector is connected to the insertion groove of the connecting pipe to improve the sealing performance. The fitting ring is located on the inner wall of the connecting pipe, and the second limiting groove at the bottom of the fitting ring is engaged and connected by the limiting circular ring and the first sealing ring, thereby improving the connection sealing performance of the pressure transmitter mechanism and the sealing mechanism. A first T-shaped sealing ring and a second T-shaped sealing ring are provided on both sides of the insertion ring at the upper end of the connecting pipe, as well as a second sealing ring inside the insertion groove to improve the sealing performance after connection.

[0018] The lower end of the sealing mechanism is connected to the pipeline through a transfer tube, and the upper end of the transfer tube is also engaged and connected to the first limiting groove through a limiting ring and a first sealing ring, thereby improving the connection stability of the transfer tube, and a wall-adhering sealing ring and a buffer wall are provided at the upper end of the transfer tube, which contact the inner wall of the connecting pipe through the wall-adhering sealing ring to improve the sealing performance, and the setting of the buffer wall can slow down the impact of liquid or gas on the connection between the transfer tube and the connecting pipe, thereby improving the sealing performance after connection.

[0019] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram provided by the utility model;

[0021] Figure 2 This is a schematic diagram of the pressure transmitter mechanism provided by the utility model;

[0022] Figure 3 This is a schematic diagram of the sealing mechanism provided by the utility model;

[0023] Figure 4 This is a cross-sectional view of the sealing mechanism provided by the utility model;

[0024] Figure 5 This is a schematic diagram of the transfer tube provided by the utility model;

[0025] Figure 6 This is a cross-sectional view of the transfer tube provided by the utility model;

[0026] Figure 7 The utility model provides Figure 4 Enlarged schematic diagram of point A in the middle.

[0027] In the figure: 1. Pressure transmitter mechanism; 2. Sealing mechanism; 3. Insert ring; 4. Fitting ring; 5. Second limiting groove; 6. Second sealing ring; 7. Connecting pipe; 8. Limiting ring; 9. First sealing ring; 10. Insert groove; 11. First T-shaped sealing ring; 12. Second T-shaped sealing ring; 13. Transfer pipe; 14. First limiting groove; 15. Wall-fitting sealing ring; 16. Buffer wall; 17. T-shaped block; 18. First rotating nut; 19. Heat sink; 20. Second rotating nut; 21. Second thread teeth; 22. First thread teeth; 23. Electrical housing; 24. Cable tube; 25. Pressure detector; 26. Display screen. DETAILED DESCRIPTION

[0028] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0029] like Figures 1 to 7 As shown, a sealing structure of a corrosion-resistant pressure transmitter provided by an embodiment of the present invention includes a pressure transmitter mechanism 1, and a sealing mechanism 2 is connected to the lower part of the pressure transmitter mechanism 1;

[0030] The sealing mechanism 2 includes a connecting tube 7, an insertion groove 10 is formed at the upper end of the connecting tube 7, and a limiting ring 8 is fixed to the inner wall of the upper and lower ends of the connecting tube 7. A first sealing ring 9 is sleeved on the outer side of the limiting ring 8. A first T-shaped sealing ring 11 and a second T-shaped sealing ring 12 are connected to the inner and outer sides of the upper end of the connecting tube 7 respectively, and a second sealing ring 6 is provided inside the insertion groove 10;

[0031] The bottom end of the sealing mechanism 2 is connected to a transfer tube 13, and a first limiting groove 14 is provided on the outer wall of the upper end of the transfer tube 13. A wall-adhering sealing ring 15 is provided on the upper end of the transfer tube 13, and the bottom end of the wall-adhering sealing ring 15 is connected to the upper end surface of the transfer tube 13 through a T-shaped block 17. A buffer wall 16 is provided on the inner wall of the wall-adhering sealing ring 15.

[0032] In this embodiment, preferably, the pressure transmitter mechanism 1 includes an electrical housing 23 , with cable tubes 24 provided at both ends of the electrical housing 23 , and a display screen 26 fixedly provided on one side of the electrical housing 23 ;

[0033] It should be noted that the setting of the electrical housing 23 facilitates the installation of circuit equipment, the setting of the cable tube 24 facilitates data transmission through cables, and the setting of the display screen 26 facilitates the display of detection parameters.

[0034] In this embodiment, preferably, a pressure detector 25 is provided at the bottom of the pressure transmitter mechanism 1, and an insert ring 3 is fixedly provided at the lower portion of the pressure detector 25. The insert ring 3 is snap-connected to the inside of the insert groove 10, and the second sealing ring 6 is attached to the bottom of the insert ring 3 inside the insert groove 10;

[0035] It should be noted that the pressure detector 25 is used to detect the pressure of liquid or gas, and the insert ring 3 is snap-connected to the inside of the insert groove 10 to facilitate stable connection, and the setting of the second sealing ring 6 facilitates improving the sealing of the connection.

[0036] In this embodiment, preferably, a fitting ring 4 is provided at the bottom of the pressure detector 25. The fitting ring 4 is located inside the insertion ring 3, and the outer wall of the fitting ring 4 fits against the inner wall of the upper end of the connecting tube 7.

[0037] It should be noted that the setting of the fitting ring 4 is convenient for fitting on the inner wall of the connecting pipe 7 to improve the sealing performance of the connection.

[0038] In this embodiment, preferably, a second limiting groove 5 is formed at the bottom end of the fitting ring 4, and the limiting rings 8 and the first sealing ring 9 at the upper and lower ends of the connecting tube 7 are respectively engaged in the second limiting groove 5 and the first limiting groove 14;

[0039] It should be noted that the second limiting groove 5 and the first limiting groove 14 are snap-fitted and connected to the limiting ring 8 and the first sealing ring 9 to achieve a stable snap-fit connection, thereby improving the connection stability between the connecting tube 7 and the fitting ring 4 and the transfer tube 13.

[0040] In this embodiment, preferably, a first rotating nut 18 is fixedly provided at the upper end of the connecting pipe 7, and a plurality of heat sinks 19 are fixedly provided at equal intervals on the connecting pipe 7;

[0041] It should be noted that the setting of the first rotating nut 18 facilitates the rotation of the connecting tube 7 to connect with the fitting ring 4, and the fitting ring 4 is provided with threaded teeth to facilitate threaded connection with the connecting tube 7, and the setting of the heat sink 19 facilitates the heat dissipation of the liquid or gas transported inside the connecting tube 7 to prevent excessive temperature from affecting the detection data.

[0042] In this embodiment, preferably, a first thread tooth 22 and a second thread tooth 21 are respectively provided at both ends of the adapter tube 13. The adapter tube 13 is threadedly connected to the bottom inner wall of the connecting tube 7 through the first thread tooth 22. The upper end of the wall sealing ring 15 is attached to the inner wall of the connecting tube 7. A second rotating nut 20 is fixed to the adapter tube 13.

[0043] It should be noted that the first thread teeth 22 and the second thread teeth 21 set at both ends of the transfer tube 13 facilitate connection with the connecting pipe 7 and the conveying pipeline, thereby improving the stability of the connection. The setting of the second rotating nut 20 facilitates the rotation of the transfer tube 13 for threaded connection installation, and the wall-mounted sealing ring 15 can improve the sealing performance.

[0044] The specific operation process of this application:

[0045] When in use, first connect the connecting pipe 7 in the sealing mechanism 2 to the pressure transmitter mechanism 1, that is, rotate the connecting pipe 7 through the first rotating nut 18 so that the upper end of the connecting pipe 7 is connected to the pressure detector 25 at the lower part of the pressure transmitter mechanism 1, and when connected, the insertion ring 3 is connected to the inside of the insertion groove 10, and the fitting ring 4 is threadedly connected to the inner wall of the connecting pipe 7 through the thread teeth, and the second sealing ring 6, the first T-shaped sealing ring 11 and the second T-shaped sealing ring 12 are used to make the sealing mechanism 2 and the pressure transmitter mechanism 1 sealed. When connected, the fitting ring 4 is engaged with the limiting ring 8 and the first sealing ring 9 at the upper end of the connecting pipe 7 through the second limiting groove 5 to improve the stability of the connection and improve the sealing performance;

[0046] Then the transfer tube 13 is threadedly connected to the conveying pipe through the second thread teeth 21, and then the bottom of the connecting pipe 7 is threadedly connected to the upper end of the transfer tube 13 through the first thread teeth 22. The upper end of the transfer tube 13 is engaged with the limiting ring 8 and the first sealing ring 9 at the bottom end of the connecting pipe 7 through the first limiting groove 14 to improve the stability of the connection and the sealing. The upper end of the transfer tube 13 is provided with a wall-adhering sealing ring 15 and a buffer wall 16. The wall-adhering sealing ring 15 is used to contact the inner wall of the connecting pipe 7 to improve the sealing. The setting of the buffer wall 16 can slow down the impact of liquid or gas on the connection between the transfer tube 13 and the connecting pipe 7, thereby improving the sealing after connection.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a corrosion-resistant pressure transmitter, comprising a pressure transmitter mechanism (1), characterized in that: The lower part of the pressure transmitter mechanism (1) is connected to a sealing mechanism (2); The sealing mechanism (2) includes a connecting tube (7), an insertion groove (10) is provided at the upper end of the connecting tube (7), limiting rings (8) are fixedly provided on the inner walls of the upper and lower ends of the connecting tube (7), a first sealing ring (9) is sleeved on the outer side of the limiting ring (8), a first T-shaped sealing ring (11) and a second T-shaped sealing ring (12) are connected to the inner and outer sides of the upper end of the connecting tube (7), and a second sealing ring (6) is provided inside the insertion groove (10); The bottom end of the sealing mechanism (2) is connected to a transfer tube (13), the outer wall of the upper end of the transfer tube (13) is provided with a first limiting groove (14), the upper end of the transfer tube (13) is provided with a wall-adhering sealing ring (15), the bottom end of the wall-adhering sealing ring (15) is connected to the upper end surface of the transfer tube (13) through a T-shaped block (17), and the inner wall of the wall-adhering sealing ring (15) is provided with a buffer wall (16).

2. The sealing structure of a corrosion-resistant pressure transmitter according to claim 1, characterized in that: The pressure transmitter mechanism (1) comprises an electrical housing (23), both ends of the electrical housing (23) are provided with cable tubes (24), and one side of the electrical housing (23) is fixedly provided with a display screen (26).

3. The sealing structure of a corrosion-resistant pressure transmitter according to claim 2, characterized in that: A pressure detector (25) is provided at the bottom of the pressure transmitter mechanism (1), an insertion ring (3) is fixedly provided at the lower portion of the pressure detector (25), the insertion ring (3) is snap-connected to the inside of the insertion groove (10), and the second sealing ring (6) is attached to the bottom of the insertion ring (3) inside the insertion groove (10).

4. The sealing structure of a corrosion-resistant pressure transmitter according to claim 3, characterized in that: A fitting ring (4) is provided at the bottom of the pressure detector (25), the fitting ring (4) is located inside the insertion ring (3), and the outer wall of the fitting ring (4) fits against the inner wall of the upper end of the connecting pipe (7).

5. The sealing structure of a corrosion-resistant pressure transmitter according to claim 4, characterized in that: A second limiting groove (5) is provided at the bottom end of the fitting ring (4), and the limiting rings (8) and the first sealing ring (9) at the upper and lower ends of the connecting tube (7) are respectively engaged in the second limiting groove (5) and the first limiting groove (14).

6. The sealing structure of a corrosion-resistant pressure transmitter according to claim 1, characterized in that: A first rotating nut (18) is fixedly provided at the upper end of the connecting pipe (7), and a plurality of heat sinks (19) are fixedly provided at equal intervals on the connecting pipe (7).

7. The sealing structure of a corrosion-resistant pressure transmitter according to claim 1, characterized in that: The two ends of the transfer tube (13) are respectively provided with a first thread tooth (22) and a second thread tooth (21); the transfer tube (13) is threadably connected to the bottom inner wall of the connecting tube (7) via the first thread tooth (22); the upper end of the wall-adhering sealing ring (15) is attached to the inner wall of the connecting tube (7); and a second rotating nut (20) is fixed on the transfer tube (13).

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