CN216899415U

CN216899415U - Intelligent pressure transmitter with explosion-proof function

Info

Publication number: CN216899415U
Application number: CN202123073253.6U
Authority: CN
Inventors: 陶凯
Original assignee: Suzhou Yuchengkai Automation Equipment Co ltd
Current assignee: Suzhou Yuchengkai Automation Equipment Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-07-05
Anticipated expiration: 2031-12-08

Abstract

The utility model relates to an intelligent pressure transmitter with an explosion-proof function, which comprises a shell and a partition plate, wherein the partition plate is arranged in the shell, so that a first inner cavity and a second inner cavity are arranged in the shell, both ends of the shell are respectively provided with a threaded connecting wall, a circuit frame is arranged in the first inner cavity, one end of the first inner cavity is provided with a front end cover matched with the threaded connecting wall, the outer edge of the first inner cavity is provided with a screen groove, a sensor mounting seat is arranged in the second inner cavity, the lower end of the second inner cavity is provided with a pipe joint, the partition plate is provided with a connecting port, one end of the second inner cavity is provided with a rear end cover, a pressure relief hole is arranged in the second inner cavity, an air vent is arranged above the pressure relief hole, a pressure relief block, a spring and a pressure relief cover are sequentially arranged in the air vent hole, one end of the spring is connected with the pressure relief block, the other end of the spring is connected with the pressure relief cover, and the intelligent pressure transmitter is provided with two space-mounted electronic elements, simple to operate can be explosion-proof, prevents the damage of atmospheric pressure to electronic component.

Description

Intelligent pressure transmitter with explosion-proof function

Technical Field

The utility model relates to the technical field of explosion-proof shells, in particular to an intelligent pressure transmitter with an explosion-proof function.

Background

The pressure transmitter is a device which converts pressure into pneumatic signals or electric signals for control and remote transmission, the pressure transmitter is the most common sensor in industrial practice, is widely applied to various industrial automatic control environments, and relates to various industries such as water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, military industry, petrifaction, oil wells, electric power, ships, machine tools, pipelines and the like, when the existing pressure transmitter is subjected to strong pressure in the using process, not only is the instrument easily damaged, but also hazardous accidents such as explosion and the like can be caused, all circuit boards, sensor cores and the like are scrapped, the safety performance is poor and easy to damage, in order to solve the problems, the Chinese patent with the patent number of CN201821287135.0 provides an intelligent pressure transmitter with an explosion-proof function, the patent provides that an explosion-proof shell of the pressure transmitter is divided into two independent inner cavities, the inner cavity connected with the sensor core is provided with a pressure discharge hole, when the pressure is too strong, the pressure overcomes the elasticity of a torsion spring, the cover plate is pushed open, the pressure is released outside the shell, the damage or explosion of components and parts caused by too large pressure is avoided, but the cover plate of the equipment is arranged outside the shell and is easily loosened or opened by external influence, the pressure in the equipment is changed, the work of internal equipment is influenced, the display screen and the sensor core are arranged in the same cavity, the changed pressure can influence irrelevant electronic elements, each component of the equipment is fixed in structure and is in a closed shape, and the components such as a circuit board are not easy to install.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides an intelligent pressure transmitter with an explosion-proof function.

(II) technical scheme

In order to achieve the above purpose, the utility model provides the following technical scheme: the utility model provides an intelligence pressure transmitter with explosion-proof function, includes casing and baffle, the baffle sets up in the casing, makes be equipped with first inner chamber and second inner chamber in the casing, the casing both ends all are equipped with the threaded connection wall, be equipped with the circuit frame in the first inner chamber, first inner chamber one end be equipped with threaded connection wall complex front end housing, first inner chamber outward flange is equipped with the screen groove, be equipped with the sensor mount pad in the second inner chamber, second inner chamber lower extreme is equipped with the coupling, be equipped with the connector on the baffle, second inner chamber one end is equipped with the rear end cap, the intracavity of second is equipped with the pressure release hole, pressure release hole top is equipped with the bleeder vent, be equipped with pressure release piece, spring and pressure release lid in the breather in proper order, the pressure release piece is connected to spring one end, and the pressure release lid is connected to the other end.

Preferably, the circuit frame includes landing leg, mounting panel and fixed wall, the mounting panel passes through landing leg and casing fixed connection, the fixed wall sets up at the mounting panel both ends for the installation of circuit board, the circuit board of easy to assemble.

Preferably, the front end cover is provided with a perspective window, and the perspective window is internally provided with protective glass, so that the display screen is protected from being damaged by external substances on the premise of being convenient to observe the display screen.

In further preferred, the contact department of front end housing and rear end cap and casing all is equipped with the sealing washer, be equipped with connecting wire in the connector, be equipped with sealed glue between connecting wire and the connector, guarantee the leakproofness of equipment, prevent the influence of gas leakage to equipment detectability.

Preferably in further, the pressure release piece is including inserting piece and capping piece, it corresponds with the pressure release hole to insert the piece, the diameter of capping piece is greater than the diameter of pressure release hole but is less than the diameter of bleeder vent, the capping piece lower surface is equipped with sealed the pad, improves the leakproofness of pressure release hole, avoids the pressure release hole to leak gas under the normal condition of pressure.

Preferably in further, be equipped with several pressure release mouth on the pressure release lid, the pressure release lid upper end is equipped with the turning handle, the pressure release lid passes through screw thread releasable connection with the bleeder vent, and the regional height of screw thread in the bleeder vent is greater than pressure release lid thickness, conveniently lets out the installation of briquetting, can adjust the spring simultaneously to the pressure of letting out the briquetting, adjustment pressure transmitter's maximum pressure value.

In further preferred, the pressure release piece upper end is equipped with the guide bar, the pressure release lid lower extreme is equipped with the guide cylinder that corresponds with the guide bar, the spring setting prevents in the guide cylinder that the pressure release piece from rocking, guarantees that the pressure release function is stable.

(III) advantageous effects

Compared with the prior art, the utility model provides an intelligent pressure transmitter with an explosion-proof function, which has the following beneficial effects:

1. according to the utility model, the shell is divided into two independent spaces, namely the first inner cavity and the second inner cavity, by arranging the partition plate, the circuit frame and the screen groove are arranged in the first inner cavity, the sensor mounting seat is arranged in the second inner cavity, so that various elements can be conveniently mounted, the sensor core body is separated from other elements, the influence of changed air pressure on other electronic elements is prevented, the electronic elements are prevented from being damaged, the elements in the two spaces are connected through connecting wires by arranging the connecting ports, and meanwhile, the airtightness is kept through the sealant.

2. According to the utility model, the pressure is released through the pressure release hole, the air vent is arranged, the pressure release block is extruded by the spring to ensure the tightness of the pressure release hole, when the air pressure in the equipment is greater than the pressure of the spring, the pressure release block is pushed to leave the pressure release hole for pressure release, so that the damage or explosion of the internal elements of the equipment caused by overlarge pressure is prevented, and meanwhile, the structure is arranged in the shell to prevent external interference.

Drawings

FIG. 1 is a schematic diagram of a front structure of an intelligent pressure transmitter with explosion-proof function according to the present invention;

FIG. 2 is a schematic view of the housing structure of the present invention;

FIG. 3 is a sectional view showing the internal structure of the housing according to the present invention;

FIG. 4 is a schematic view of the connection structure of the pressure relief block, the spring and the pressure relief cover according to the present invention.

In the figure: 1. a housing; 2. a partition plate; 3. a first lumen; 4. a second lumen; 5. a threaded connection wall; 6. a circuit frame; 7. a front end cover; 8. a screen slot; 9. a sensor mount; 10. A pipe joint; 11. a connecting port; 12. a rear end cap; 13. a pressure relief vent; 14. air holes are formed; 15. Releasing the pressure block; 16. a spring; 17. a pressure relief cover; 18. a support leg; 19. mounting a plate; 20. a fixed wall; 21. a perspective window; 22. protecting glass; 23. a seal ring; 24. connecting an electric wire; 25. Sealing glue; 26. inserting a block; 27. a cover block; 28. a gasket; 29. a pressure relief port; 30. a handle is rotated; 31. a guide bar; 32. and a guide cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example 1:

referring to fig. 1-4, an intelligent pressure transmitter with explosion-proof function comprises a housing 1 and a partition plate 2, the partition plate 2 is arranged in the housing 1, so that a first inner cavity 3 and a second inner cavity 4 are arranged in the housing 1, both ends of the housing 1 are provided with threaded connection walls 5, a circuit rack 6 is arranged in the first inner cavity 3, one end of the first inner cavity 3 is provided with a front end cover 7 matched with the threaded connection walls 5, the outer edge of the first inner cavity 3 is provided with a screen groove 8, a sensor mounting seat 9 is arranged in the second inner cavity 4, the lower end of the second inner cavity 4 is provided with a pipe joint 10, the partition plate 2 is provided with a connecting port 11, one end of the second inner cavity 4 is provided with a rear end cover 12, the second inner cavity 4 is provided with a pressure relief hole 13, an air vent 14 is arranged above the pressure relief hole 13, and a pressure relief block 15 is sequentially arranged in the air vent 14, a spring 16 and a pressure relief cover 17, wherein one end of the spring 16 is connected with the pressure relief block 15, and the other end is connected with the pressure relief cover 17.

In this embodiment, the circuit frame 6 includes legs 18, a mounting plate 19 and fixing walls 20, the mounting plate 19 is fixedly connected to the housing 1 through the legs 18, the fixing walls 20 are disposed at two ends of the mounting plate 19, the legs 18 support the mounting plate 19 to provide sufficient space for inserting the circuit board between the mounting plate 19 and the fixing walls 20, and the fixing walls 20 prevent the circuit board from being displaced and fix the position of the circuit board.

In this embodiment, the front end cover 7 is provided with a transparent window 21, the transparent window 21 is provided with a protective glass 22 therein, the display screen is observed through the transparent window 21, and the protective glass 22 provides protection for the display screen.

In this embodiment, the contact positions of the front end cover 7 and the rear end cover 12 with the casing 1 are both provided with a sealing ring 23, a connecting wire 24 is arranged in the connecting port 11, a sealant 25 is arranged between the connecting wire 24 and the connecting port 11, the sealing ring 23 prevents the outside from generating gas communication with the inside of the casing 1 to influence the work of internal equipment, the sealant 25 prevents the first inner cavity 3 from influencing the change of the air pressure in the second inner cavity 4, and the connecting wire 24 enables the equipment in the first inner cavity 3 and the second inner cavity 4 to be electrically connected.

In this embodiment, the pressure relief block 15 includes an insertion block 26 and a cover block 27, the insertion block 26 corresponds to the pressure relief hole 13, the diameter of the cover block 27 is larger than the diameter of the pressure relief hole 13 but smaller than the diameter of the vent hole 14, a sealing gasket 28 is disposed on the lower surface of the cover block 27, the spring 16 pushes the pressure relief block 15 to insert the insertion block 26 into the pressure relief hole 13, and the cover block 27 is tightly attached to the bottom wall of the vent hole 14 through the sealing gasket 28 to provide sealing capability.

In this embodiment, the pressure relief cover 17 is provided with a plurality of pressure relief ports 29, the upper end of the pressure relief cover 17 is provided with a rotating handle 30, the pressure relief cover 17 is detachably connected with the air vent 14 through threads, the height of a threaded area in the air vent 14 is larger than the thickness of the pressure relief cover 17, the pressure relief cover 17 is installed on the air vent 14 by rotating the pressure relief cover 17 through the rotating handle 30, and the pressure relief cover 17 extrudes the spring 16 to enable the spring 16 to generate thrust on the pressure relief block 15, so that the pressure relief block 15 blocks the pressure relief hole 13.

In this embodiment, the upper end of the pressure release block 15 is provided with a guide rod 31, the lower end of the pressure release cover 17 is provided with a guide cylinder 32 corresponding to the guide rod 31, the spring 16 is arranged in the guide cylinder 32, and the guide rod 31 slides up and down along the guide cylinder 3, so that the pressure release block 15 is always aligned with the pressure release hole 13.

Example 2:

referring to fig. 1-4, in use, the sensor core is mounted on the sensor mounting seat 9, the circuit board is mounted on the circuit frame 6, the circuit board is inserted between the mounting plate 19 and the fixing wall 20, and the circuit board is fixed by the fixing wall 20 to prevent the circuit board from moving around, and the sensor core and the circuit board are electrically connected by the connecting wire 24, when in actual use, a conductive element can be additionally arranged on the circuit frame 6 and the sensor mounting seat 9, and the connecting wire 24 is connected with the conductive element, the wire step after mounting other elements is omitted, the rear end cap 12 is connected with the threaded connecting wall 5 on the second inner cavity 4, the rear end cap 12 is rotated to be connected by screw fit, the rear end cap 12 is pressed with the casing 1 by the sealing ring 23, the connecting part of the second inner cavity 4 and the rear end cap 12 is a sealing structure, the display screen is mounted in the screen groove 8, and the display screen is electrically connected with the circuit board, at this moment, the display screen is tightly attached to the circuit board, the circuit board is prevented from sliding out of the circuit frame 6, the front end cover 7 is rotated, the front end cover 7 is installed on the threaded connection wall 5 of the first inner cavity 3 through threaded fit, the display screen is tightly pressed through the front end cover 7, the pressure relief block 15 is placed into the air hole 14, the insertion block 26 is inserted into the pressure relief hole 13, the pressure relief cover 17 is rotated through the rotating handle 30, the pressure relief cover 17 is in threaded fit with the air hole 14, the height of the pressure relief cover 17 in the air hole 14 is adjusted, the pressure provided by the spring 16 is adjusted, and the equipment is installed at a working position through the pipe joint 10.

Example 3:

referring to fig. 1, 3 and 4, in operation, the partition 2 divides the housing 1 into two independent spaces, namely a first inner chamber 3 and a second inner chamber 4, and the two spaces are not interfered with each other by the sealant 25 in the connector 11, the sensor core transmits collected data to the circuit board through the connecting wire 24, the circuit board is displayed on the display screen after being processed, a user can observe the data through the transparent window 21, the display screen is protected from external substances by the protective glass 22, the display screen is prevented from being damaged, when the pressure generated in the second inner chamber 4 is too high, the pressure pushing block 26 is lifted by the air pressure to separate the pressure relief block 15 from the pressure relief hole 13, the air flow flows out from the pressure relief hole 13 and flows to the outside from the pressure relief port 29 through the air vent 14, when the air pressure in the device is reduced and the pressure cannot push the block 26, the spring 16 pushes the cover block 27 to move downwards through the guide rod 31, the guide rod 31 slides along the guide cylinder 32 to ensure that the insertion block 26 is always aligned with the pressure relief hole 13, the insertion block 26 moves downwards to be inserted into the pressure relief hole 13, and the cover block 27 is tightly attached to the bottom wall of the air vent 14 through the sealing gasket 28 to enable the pressure relief hole 13 to be changed into a sealing structure, so that the pressure in the equipment is adjusted, and the damage or explosion of internal elements of the equipment caused by overlarge pressure is prevented.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an intelligence pressure transmitter with explosion-proof function, includes casing (1) and baffle (2), baffle (2) set up in casing (1), make be equipped with first inner chamber (3) and second inner chamber (4), its characterized in that in casing (1): the improved sensor is characterized in that threaded connection walls (5) are arranged at two ends of the shell (1), a circuit rack (6) is arranged in the first inner cavity (3), a front end cover (7) matched with the threaded connection walls (5) is arranged at one end of the first inner cavity (3), a screen groove (8) is arranged at the outer edge of the first inner cavity (3), a sensor mounting seat (9) is arranged in the second inner cavity (4), a pipe joint (10) is arranged at the lower end of the second inner cavity (4), a connecting port (11) is arranged on the partition plate (2), a rear end cover (12) is arranged at one end of the second inner cavity (4), a pressure relief hole (13) is arranged in the second inner cavity (4), air holes (14) are formed above the pressure relief hole (13), a pressure relief block (15), a spring (16) and a pressure relief cover (17) are sequentially arranged in the air holes (14), one end of the spring (16) is connected with the pressure relief block (15), the other end is connected with a pressure relief cover (17).

2. The intelligent pressure transmitter with explosion-proof function of claim 1, characterized in that: the circuit frame (6) comprises supporting legs (18), a mounting plate (19) and fixing walls (20), the mounting plate (19) is fixedly connected with the shell (1) through the supporting legs (18), and the fixing walls (20) are arranged at two ends of the mounting plate (19).

3. The intelligent pressure transmitter with explosion-proof function of claim 1, characterized in that: the front end cover (7) is provided with a perspective window (21), and protective glass (22) is arranged in the perspective window (21).

4. The intelligent pressure transmitter with explosion-proof function of claim 1, characterized in that: the front end cover (7) and the contact position of the rear end cover (12) and the shell (1) are both provided with a sealing ring (23), a connecting wire (24) is arranged in the connecting port (11), and a sealing glue (25) is arranged between the connecting wire (24) and the connecting port (11).

5. The intelligent pressure transmitter with explosion-proof function of claim 1, characterized in that: the pressure relief block (15) comprises an inserting block (26) and a cover block (27), the inserting block (26) corresponds to the pressure relief hole (13), the diameter of the cover block (27) is larger than that of the pressure relief hole (13) but smaller than that of the air vent (14), and a sealing gasket (28) is arranged on the lower surface of the cover block (27).

6. The intelligent pressure transmitter with explosion-proof function of claim 1, characterized in that: be equipped with several pressure release mouth (29) on pressure release lid (17), pressure release lid (17) upper end is equipped with turning handle (30), pressure release lid (17) and bleeder vent (14) pass through screw thread releasable connection, and the regional height of screw thread in bleeder vent (14) is greater than pressure release lid (17) thickness.

7. The intelligent pressure transmitter with explosion-proof function of claim 1, characterized in that: the pressure relief block (15) upper end is equipped with guide bar (31), pressure relief lid (17) lower extreme is equipped with guide cylinder (32) that correspond with guide bar (31), spring (16) set up in guide cylinder (32).