CN219391210U - Double-seal differential pressure monitoring instrument - Google Patents

Abstract

The utility model relates to a double containment differential pressure monitoring instrument relates to lightweight instrument technical field, in order to reduce the not tight problem of differential pressure monitoring instrument seal, it includes main casing and air guide connector, the joint groove has been seted up on the main casing, the air guide connector is including being used for pegging graft the joint in the joint groove, be provided with first fixed subassembly and second fixed subassembly between air guide connector and the main casing, first fixed subassembly is including laying the external screw thread on the joint, be provided with the internal thread of being connected with external screw thread cooperation on the joint groove inside wall, the second fixed subassembly is used for fixing main casing and air guide connector. The application has the effect of improving the sealing performance of the differential pressure monitoring instrument.

Description

Double-seal differential pressure monitoring instrument

Technical Field

The application relates to the technical field of light-weight instruments, in particular to a double-seal differential pressure monitoring instrument.

Background

In the fields of industrial gas, medical industry and the like, the internal and external air pressure needs to be monitored, and the required equipment is a differential pressure instrument monitored by internal and external comparison. Because the sensor senses air pressure through the pressure sensor element, in use, the air leakage phenomenon of the instrument is caused by the fact that the tightness of the product is poor, the sensor and the gasket are not pressed or the side rubber ring is aged, and the like, so that the measurement data of the product is inaccurate.

Disclosure of Invention

In order to improve the leakproofness of differential pressure monitoring instrument, this application provides a double containment differential pressure monitoring instrument.

The application provides a double containment differential pressure monitoring instrument adopts following technical scheme:

the utility model provides a double containment differential pressure monitoring instrument, includes main casing and air guide connector, the joint groove has been seted up on the main casing, the air guide connector is including being used for pegging graft the joint in the joint groove, be provided with first fixed subassembly and second fixed subassembly between air guide connector and the main casing, first fixed subassembly is including laying the external screw thread on the joint, be provided with the internal thread of being connected with the external screw thread cooperation on the joint groove inside wall, second fixed subassembly is used for fixing main casing and air guide connector

Through adopting above-mentioned technical scheme, joint and joint groove threaded connection for air guide joint and main casing fixed seal, effectually played the effect of end side sealed sensor, even first fixed subassembly drops, the second fixed subassembly also can be fixed main casing and air guide joint, thereby makes the product normally use, the leakproofness of reinforcing differential pressure monitor, improves the life cycle of product, increases economic benefits.

Optionally, the second fixed subassembly includes a plurality of first solder joints that set up on air guide joint week lateral wall, be provided with a plurality of second solder joints that correspond with first solder joint on the main casing, first solder joint passes through the welding with corresponding second solder joint and links to each other.

Through adopting above-mentioned technical scheme, after joint and joint groove threaded connection, weld first solder joint and the second solder joint that corresponds, can effectually reduce joint and joint groove and appear not hard up possibility, and then strengthen differential pressure monitoring instrument's leakproofness.

Optionally, the second fixed subassembly is including seting up the holding tank on the main casing, be provided with the welding strip in the holding tank, the tip and the holding tank of welding strip keep away from open-ended inner wall welding, the lateral wall and the air guide joint week lateral wall welding of welding strip.

Through adopting above-mentioned technical scheme, the welding strip covers and welds the air guide joint lateral wall together, can further strengthen the steadiness and the leakproofness of main casing and air guide joint.

Optionally, the holding tank is interior joint has sealing rubber circle, sealing rubber circle wraps up the welding strip.

By adopting the technical scheme, the sealing rubber ring can further improve the tightness of the connection between the main shell and the air guide connector.

Optionally, the second fixed subassembly includes fixed connection at the annular fixed plate of main casing one end, air guide joint week lateral wall fixedly connected with and fixed plate vertically first butt board, the one end fixedly connected with that first butt board kept away from the air guide joint with first butt board vertically second butt board, be provided with the fastener that is used for fixed plate and second butt board fixed plate on the second butt board.

Through adopting above-mentioned technical scheme, the second butt board passes through the fastener with the fixed plate fixedly, can reduce the casing and the air guide joint and appear rotatory possibility that breaks away from to the steadiness that casing and air guide joint are connected has been strengthened.

Optionally, the fastener is the rivet that passes second butt board and fixed plate simultaneously, the end at rivet both ends supports tightly with first butt board and fixed plate respectively.

Through adopting above-mentioned technical scheme, the rivet can be in the same place second butt board and fixed plate fastening, has strengthened the steadiness that casing and air guide joint are connected.

Optionally, the main housing is detachably connected with the air guide connector.

Through adopting above-mentioned technical scheme, the main casing can dismantle with the air guide joint and be connected, is convenient for maintain or change the air guide joint of damage.

Optionally, the fastener is a bolt, one end of the bolt passes through the first abutting plate and the fixed plate simultaneously and is in threaded connection with a nut.

By adopting the technical proposal, the utility model has the advantages that,

in summary, the present application includes at least one of the following beneficial technical effects:

1. the clamping connector is in threaded connection with the clamping groove, so that the air guide connector and the main shell are fixedly sealed, the effect of an end-side sealing sensor is effectively achieved, and even if the first fixing component falls off, the second fixing component can fix the main shell and the air guide connector, so that a product can be normally used, the sealing performance of the differential pressure monitoring instrument is enhanced, the service cycle of the product is prolonged, and the economic benefit is increased;

2. after the clamping connector is in threaded connection with the clamping groove, the first welding spot and the corresponding second welding spot are welded, so that the possibility of looseness of the clamping connector and the clamping groove can be effectively reduced, and the tightness of the differential pressure monitoring instrument is further enhanced;

3. the welding strip covers and welds the side wall of the air guide connector together, so that the stability and the tightness of the main shell and the air guide connector can be further enhanced.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;

FIG. 2 is a schematic diagram of an exploded construction of example 1 of the present application;

FIG. 3 is a schematic diagram of an exploded construction of example 2 of the present application;

FIG. 4 is a schematic diagram of an exploded construction of example 3 of the present application;

FIG. 5 is a schematic diagram of an exploded construction of example 4 of the present application;

reference numerals illustrate: 1. a main housing; 11. a clamping groove; 2. an air guide joint; 21. a clamping joint; 22. a main body end; 3. a first fixing assembly; 31. an external thread; 32. an internal thread; 4. a second fixing assembly; 41. a first welding spot; 42. a second welding spot; 43. a receiving groove; 44. welding strips; 45. sealing the rubber ring; 46. a fixing plate; 47. a first abutting plate; 48. a second abutting plate; 49. a fastener; 491. a rivet; 492. a bolt; 493. and (3) a nut.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a double-seal differential pressure monitoring instrument.

Example 1:

the utility model provides a double containment differential pressure monitor, referring to fig. 1 and 2, including main casing 1 and air guide connector 2, joint groove 11 that the cross-section is circular is seted up to the one end of main casing 1, is provided with internal thread 32 on the joint groove 11 inside wall. The air guide connector 2 is provided with a first fixing component 3 and a second fixing component 4 for fixing the main shell 1 and the air guide connector 2, the air guide connector 2 comprises a main body end 22 and a clamping connector 21 integrally formed with the main body end 22, the clamping connector 21 is cylindrical, and the first fixing component 3 comprises an external thread 31 arranged on the peripheral side wall of the clamping connector 21. The main housing 1 is fixed to the air guide connector 2 by aligning the clamping connector 21 with the clamping groove 11 and screwing the main body end 22 so that the clamping connector 21 is inserted into the clamping groove 11 and is screwed with the side wall of the clamping groove 11.

The second fixing component 4 comprises a plurality of second welding spots 42 arranged on one end of the main shell 1, the plurality of second welding spots 42 surround the opening of the clamping groove 11 to form a circular ring, the end part of the main body end 22, which is close to the clamping joint 21, is fixedly connected with a plurality of first welding spots 41 corresponding to the second welding spots 42, and the first welding spots 41 can be welded with the corresponding second welding spots 42.

The implementation principle of the double-seal differential pressure monitoring instrument in the embodiment 1 of the application is as follows: the clamping connector 21 is aligned with the clamping groove 11 and the main body end 22 is screwed, so that the clamping connector 21 is inserted into the clamping groove 11 and is in threaded connection with the side wall of the clamping groove 11, and when the main body end 22 is abutted with the air guide connector 2, the first welding point 41 and the corresponding second welding point 42 are welded through the welding machine, so that the main shell 1 and the air guide connector 2 are fixed. The main shell 1 and the air guide connector 2 can be tightly connected together through threaded connection, and then the loosening of threads can be reduced by welding the main shell 1 and the air guide connector 2, so that the connection stability of the main shell 1 and the air guide connector 2 is enhanced.

Example 2:

this embodiment differs from embodiment 1 in that:

referring to fig. 3, the second fixing component 4 includes an annular accommodating groove 43 formed on a side wall of the clamping groove 11, an annular welding strip 44 is disposed in the accommodating groove 43, an end portion of the welding strip 44 is welded to an inner wall of the accommodating groove 43 far away from the opening, the side wall of the welding strip 44 is attached to and welded to a peripheral side wall of the main body end 22, a sealing rubber ring 45 is disposed in the accommodating groove 43, and the sealing rubber ring 45 is sleeved on an outer side wall of the welding strip 44 and abuts against an inner side wall of the accommodating groove 43.

After the clamping connector 21 is inserted into the clamping groove 11 and is in threaded connection with the side wall of the clamping groove 11, the welding strip 44 is attached to the peripheral side wall of the main body end 22 and welded, and the sealing rubber ring 45 sleeved on the welding strip 44 is placed into the accommodating groove 43 and is abutted against the inner side wall of the accommodating groove 43. The main casing 1 and the air joint are fully welded by the welding strip 44 to improve the welding stability, and the sealing performance can be improved, and the sealing rubber ring 45 can further improve the sealing performance of the main casing 1 and the air joint.

Example 3:

this embodiment differs from embodiment 2 in that:

referring to fig. 4, the second fixing assembly 4 includes an annular fixing plate 46 fixedly connected to one end of the main housing 1, a first abutting plate 47 perpendicular to the fixing plate 46 is fixedly connected to a peripheral side wall of the main body end 22, a second abutting plate 48 perpendicular to the first abutting plate 47 is fixedly connected to one end of the first abutting plate 47 away from the air guide connector 2, and a fastener 49 for fixing the fixing plate 46 and the second abutting plate 48 is provided on the first abutting plate 47. In the present embodiment, the fastener 49 is specifically provided as a rivet 491, the rivet 491 passes through both the second abutment plate 48 and the fixing plate 46, and both ends of the rivet 491 abut against the second abutment plate 48 and the fixing plate 46, respectively.

Example 4:

this embodiment differs from embodiment 3 in that:

referring to fig. 5, the fastener 49 includes a bolt 492 passing through both the second abutment plate 48 and the fixing plate 46, and a nut 493 is screwed through one ends of the second abutment plate 48 and the fixing plate 46 by the bolt 492. The nut 493 is screwed to abut against the fixing plate 46, so that the first abutting plate 47 and the fixing plate 46 can be fixed.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The utility model provides a double containment differential pressure monitoring instrument, includes main casing (1) and air guide joint (2), joint groove (11) have been seted up on main casing (1), air guide joint (2) are including being used for pegging graft joint (21) in joint groove (11), a serial communication port, be provided with first fixed subassembly (3) and second fixed subassembly (4) between air guide joint (2) and main casing (1), first fixed subassembly (3) are including laying external screw thread (31) on joint (21), be provided with on joint groove (11) inside wall with internal screw thread (32) of external screw thread (31) cooperation connection, second fixed subassembly (4) are used for fixing main casing (1) and air guide joint (2).

2. The dual-seal differential pressure monitoring instrument according to claim 1, wherein the second fixing component (4) comprises a plurality of first welding spots (41) arranged on the peripheral side wall of the air guide joint (2), a plurality of second welding spots (42) corresponding to the first welding spots (41) are arranged on the main shell (1), and the first welding spots (41) are connected with the corresponding second welding spots (42) through welding.

3. The double-seal differential pressure monitoring instrument according to claim 1, wherein the second fixing assembly (4) comprises a containing groove (43) formed in the main casing (1), a welding strip (44) is arranged in the containing groove (43), the end part of the welding strip (44) is welded with the inner wall of the containing groove (43) far away from the opening, and the side wall of the welding strip (44) is welded with the peripheral side wall of the air guide connector (2).

4. A dual seal differential pressure monitoring instrument according to claim 3, characterized in that a sealing rubber ring (45) is clamped in the accommodating groove (43), and the sealing rubber ring (45) wraps the welding strip (44).

5. The dual-seal differential pressure monitoring instrument according to claim 1, wherein the second fixing component (4) comprises an annular fixing plate (46) fixedly connected to one end of the main casing (1), a first abutting plate (47) perpendicular to the fixing plate (46) is fixedly connected to the peripheral side wall of the air guide joint (2), a second abutting plate (48) perpendicular to the first abutting plate (47) is fixedly connected to one end, away from the air guide joint (2), of the first abutting plate (47), and a fastener (49) for fixing the fixing plate (46) and the second abutting plate (48) is arranged on the second abutting plate (48).

6. The double-seal differential pressure monitoring instrument according to claim 5, wherein the fastener (49) is a rivet (491) passing through the second abutting plate (48) and the fixing plate (46) simultaneously, and the ends of the rivet (491) are abutted against the second abutting plate (48) and the fixing plate (46) respectively.

7. The double-seal differential pressure monitoring instrument according to claim 5, wherein the main housing (1) is detachably connected with the air guide connector (2).

8. The dual seal differential pressure monitor as defined in claim 7, wherein the fastener (49) is a bolt (492), and one end of the bolt (492) passes through the second abutment plate (48) and the fixing plate (46) simultaneously and is screwed with a nut (493).