Intelligent monocrystalline silicon diaphragm sealing type pressure transmitter

Abstract

An intelligent monocrystalline silicon diaphragm sealed pressure transmitter disclosed by the present invention comprises a transmitter body, the lower end of the transmitter body is connected with a first pipeline, and one end of the first pipeline far away from the transmitter body is provided with a mounting pipeline. The first pipeline is inserted into the mounting pipeline; one end, far away from the transmitter body, of the mounting pipeline is connected with a second pipeline; one end, close to the mounting pipeline, of the first pipeline is connected with a sealing ring, and the sealing ring is attached to the inner wall of the mounting pipeline; an annular compression groove is formed in the outer side of the first pipeline; when the transmitter body needs to be disassembled, the arc-shaped extrusion block is rotated towards the position far away from the first pipeline, so that the first pipeline loses the pressing force, the transmitter body can be disassembled, the transmitter body is convenient and rapid to assemble and disassemble, and the assembly and disassembly efficiency of the transmitter body is improved. And the sealing performance and the stability of the transmitter body can be ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pressure transmitters, and particularly relates to an intelligent single-crystal silicon diaphragm sealed pressure transmitter. BACKGROUND

[0002] The intelligent single-crystal silicon diaphragm sealed pressure transmitter is a high-precision pressure measuring instrument based on the single-crystal silicon piezoresistive effect, adopts a full-welded stainless steel structure and a diaphragm sealing technology, can measure gas, liquid and vapor pressure, and is widely applied to industrial fields such as petroleum chemical industry, electric power and pharmaceutical industry, and has high stability, strong anti-interference and wide temperature range working capability.

[0003] The patent application with the patent publication number CN116293153B discloses a pipeline connecting structure of a pressure transmitter, solves the problem that the original use of adhesive tape to ensure sealing leads to difficulty in dismounting the pressure transmitter and even causes damage to the threads, and facilitates the installation and dismounting of the pressure transmitter, but in specific use, when the pressure transmitter is installed, the connecting rod and the connecting seat still need to be connected through threads, the threads may be corroded after long-time use, and frequent dismounting and mounting may also cause damage to the threads, leading to the problems of poor sealing and poor stability of the pressure transmitter after installation. SUMMARY

[0004] The application aims to solve the problems of poor sealing and poor stability of the pressure transmitter in the prior art after installation, and provides an intelligent single-crystal silicon diaphragm sealed pressure transmitter.

[0005] The object of the application can be achieved through the following technical solutions. An intelligent single-crystal silicon diaphragm sealed pressure transmitter, comprising a transmitter body, a first pipeline connected to the lower end of the transmitter body, an installation pipeline provided at the end of the first pipeline away from the transmitter body, the first pipeline being inserted into the installation pipeline, a second pipeline connected to the end of the installation pipeline away from the transmitter body; a sealing ring connected to the end of the first pipeline close to the installation pipeline, the sealing ring being attached to the inner wall of the installation pipeline; an annular pressure receiving groove provided on the outer side of the first pipeline, the installation pipeline being provided with symmetrically arranged movable grooves at positions corresponding to the annular pressure receiving groove, an arc-shaped extrusion block being rotatably connected in the movable groove, the shape of the arc-shaped extrusion block close to the end of the first pipeline being the same as that of the annular pressure receiving groove, and the arc-shaped extrusion block being attached to the annular pressure receiving groove.

[0006] Preferably, symmetrically arranged through grooves are provided at positions of the end of the first pipeline away from the transmitter body corresponding to the arc-shaped extrusion block, and the arc-shaped extrusion block is intermittently and slidably connected in the through groove.

[0007] Preferably, the arc-shaped extrusion block is connected with a pressing fixed plate away from one end of the annular compression groove, the second pipeline is connected with symmetrically arranged screw rods corresponding to the position of the pressing fixed plate, and the screw rod is threadedly connected with a nut away from the second pipeline.

[0008] Preferably, the nut is attached to the pressing fixed plate, the pressing fixed plate is provided with a through hole corresponding to the position of the screw rod, the screw rod penetrates through the through hole, and the diameter of the through hole is greater than the diameter of the screw rod.

[0009] Preferably, the installation pipeline is connected with a support ring corresponding to the position of the sealing ring, the support ring is provided with an air bag, the second pipeline is connected with symmetrically arranged concentration boxes corresponding to the position of the extrusion fixed plate on the outer side, the concentration boxes are connected with the air bag through a communication pipe, the communication pipe penetrates through and is connected with the installation pipeline.

[0010] Preferably, the concentration box is slidably connected with a piston, the piston is connected with a pressing rod in the middle of the side away from the communication pipe, the pressing rod penetrates through the concentration box and is connected with a pressing ring away from the piston, the pressing ring is attached to the pressing fixed plate, and the first spring is connected between the side of the piston close to the pressing rod and the concentration box.

[0011] Preferably, the installation pipeline is connected with symmetrically arranged stop blocks away from the arc-shaped extrusion block on the outer side, the first pipeline is connected with a vertical plate corresponding to the position of the stop block on the outer side, the vertical plate is connected with symmetrically arranged positioning plates on the side close to the stop block, the positioning plates are rotatably connected with a positioning block, and the end of the positioning block away from the vertical plate is located between the stop blocks.

[0012] Preferably, the positioning block is connected with the vertical plate through a second spring, the first end of one of the stop blocks is provided with a first chamfer away from the positioning block, the positioning block is provided with a second chamfer corresponding to the first chamfer, and the first chamfer and the second chamfer are used in cooperation.

[0013] The beneficial effects of the present application are as follows: 1) When the transmitter body is installed, the first pipeline is sent into the installation pipeline, and after being sent in, the two arc-shaped extrusion blocks are rotated towards the position close to the second pipeline. Because the shape of the arc-shaped extrusion block close to the end of the first pipeline is the same as that of the annular compression groove, when the arc-shaped extrusion block is rotated, the arc-shaped extrusion block will compress the first pipeline and drive the first pipeline into the interior of the installation pipeline, so that the end of the first pipeline compresses the sealing ring, thereby ensuring the sealing between the first pipeline and the installation pipeline. When the transmitter body needs to be removed, the arc-shaped extrusion block is rotated away from the first pipeline, so that the first pipeline loses the compression force, and the transmitter body can be removed. The installation and removal of the transmitter body are relatively convenient and fast, and the sealing and stability of the transmitter body can be ensured.

[0014] 2) when installing the transmitter body, the arc-shaped extrusion block rotates to the position close to the first pipeline, in the process of rotation, the arc-shaped extrusion block presses the compression ring, the compression rod extrudes the piston to the inside of the centralized box, in the process of movement, the piston pulls the first spring, the first spring is stretched and stores the restoring force, at the same time, the piston extrudes the gas or liquid in the centralized box into the air bag through the communication pipe, the air bag is inflated, so that the sealing property between the first pipeline and the installation pipeline can be enhanced; when removing the transmitter body, the arc-shaped extrusion block rotates to the position away from the first pipeline, after rotation, the arc-shaped extrusion block no longer extrudes the compression ring, the compression ring, the compression rod and the piston reset under the action of the first spring, in the process of resetting, the piston draws the gas or liquid in the air bag into the centralized box, the air bag is reduced, so that the air bag can be avoided to affect the removal of the transmitter body.

[0015] 3) when installing the transmitter body and rotating the first pipeline, the positioning block contacts one of the stop blocks, under the cooperation of the first chamfer and the second chamfer, the positioning block is extruded and rotates, the positioning block rotates and extrudes the second spring, the second spring is contracted and stores the restoring force after being extruded, after the first pipeline rotates and the positioning block passes one of the stop blocks, the positioning block loses extrusion, the positioning block resets under the action of the restoring force of the second spring, so that the positioning block is between the stop blocks, so that the positioning block, the first pipeline and the transmitter body are preliminarily fixed, the first pipeline is prevented from rotating after being fixed, and the stability of the transformer body is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be further described below in combination with the drawings.

[0017] Figure 1 is the perspective view of the application; Figure 2 is the sectional view of the application; Figure 3 is Figure 2 the enlarged view of A in the figure; Figure 4 is the perspective view of the first pipeline in the application; Figure 5 is the perspective view of the other side of the application; Figure 6 is Figure 5 the enlarged view of B in the figure.

[0018] In the figure: 1, transmitter body; 2, annular pressure receiving groove; 3, support ring; 4, stop block; 11, first pipeline; 12, installation pipeline; 13, second pipeline; 14, sealing ring; 21, movable groove; 22, arc-shaped extrusion block; 23, pressing fixed plate; 24, screw rod; 25, through hole; 26, nut; 27, through groove; 31, air bag; 32, centralized box; 33, connecting pipe; 34, piston; 35, pressing rod; 36, pressing ring; 37, first spring; 41, positioning plate; 42, positioning block; 43, vertical plate; 44, second spring; 45, first chamfer; 46, second chamfer. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0020] Please refer to Figure 1 - Figure 6 As shown in the figure, an intelligent single-crystal silicon diaphragm sealed pressure transmitter includes a transmitter body 1, which is used for measuring the pressure of gas or liquid and realizing remote transmission and control.

[0021] A first pipe 11 is connected to the lower end of the transmitter body 1, and an installation pipe 12 is arranged at the end of the first pipe 11 away from the transmitter body 1. The first pipe 11 is inserted into the installation pipe 12, the first pipe 11 is used for supporting the transmitter body 1, and the installation pipe 12 is used for fixing the transmitter body 1.

[0022] The end of the installation pipe 12 away from the transmitter body 1 is connected to a second pipe 13, and the second pipe 13 is used for conveying gas or liquid.

[0023] The end of the first pipe 11 close to the installation pipe 12 is connected to a sealing ring 14, the sealing ring 14 is attached to the inner wall of the installation pipe 12, and the sealing ring 14 is used for enhancing the sealing property between the first pipe 11 and the installation pipe 12.

[0024] An annular pressure receiving groove 2 is arranged on the outer side of the first pipe 11, and symmetrical movable grooves 21 are arranged on the installation pipe 12 corresponding to the position of the annular pressure receiving groove 2. The movable grooves 21 are used for providing the required movement space of the arc-shaped extrusion blocks 22.

[0025] The movable grooves 21 are rotatably connected to the arc-shaped extrusion blocks 22, the shape of the arc-shaped extrusion blocks 22 close to the end of the first pipe 11 is the same as that of the annular pressure receiving groove 2, and the arc-shaped extrusion blocks 22 are attached to the annular pressure receiving groove 2. Through this arrangement, the first pipe 11 can be extruded close to the installation pipe 12 under the cooperation of the arc-shaped extrusion blocks 22 and the annular pressure receiving groove 2, so that the first pipe 11 is always in a compressed state, thereby ensuring the sealing property.

[0026] The first pipeline 11 is provided with symmetrically arranged through slots 27 at a position corresponding to the position of the arc-shaped extrusion block 22 away from the transmitter body 1, the arc-shaped extrusion block 22 is intermittently slidably connected in the through slots 27, and the through slots 27 are used to avoid the arc-shaped extrusion block 22 from the first pipeline 11, so that the first pipeline 11 can be normally inserted into the installation pipeline 12.

[0027] The arc-shaped extrusion block 22 is connected with a pressing fixed plate 23 away from the annular pressure receiving groove 2, the pressing fixed plate 23 is used to press the arc-shaped extrusion block 22, so that the arc-shaped extrusion block 22 can rotate.

[0028] The second pipeline 13 is connected with symmetrically arranged screw rods 24 at a position corresponding to the pressing fixed plate 23, the pressing fixed plate 23 is provided with through holes 25 corresponding to the positions of the screw rods 24, the screw rods 24 penetrate through the through holes 25, the screw rods 24 are threadedly connected with nuts 26 away from the second pipeline 13, and the nuts 26 are attached to the pressing fixed plate 23, through the cooperation of the screw rods 24 and the nuts 26, the pressing fixed plate 23 can be fixed, so that the pressing fixed plate 23 cannot rotate, the first pipeline 11 is prevented from moving away from the installation pipeline 12, and the sealing between the first pipeline 11 and the installation pipeline 12 is ensured.

[0029] The diameter of the through hole 25 is larger than the diameter of the screw rod 24, through this arrangement, it is ensured that the screw rod 24 can penetrate through the through hole 25 after the installation fixed plate rotates.

[0030] In specific use, when the transmitter body 1 is installed, the first pipe 11 is sent into the installation pipe 12 until the end of the first pipe 11 is in contact with the inner wall of the installation pipe 12, and the through slot 27 needs to be aligned with the arc-shaped extrusion block 22 when being sent in. After the end of the first pipe 11 is in contact with the inner wall of the installation pipe 12, the arc-shaped extrusion block 22 is correspondingly in the annular compression groove 2. At this time, the first pipe 11 is rotated by a certain angle to preliminarily fix the first pipe 11 in the installation pipe 12. After the rotation is completed, the two arc-shaped extrusion blocks 22 are rotated towards the position close to the second pipe 13. Because the shape of the position close to the end of the first pipe 11 of the arc-shaped extrusion block 22 is the same as that of the annular compression groove 2, when the arc-shaped extrusion block 22 is rotated, the arc-shaped extrusion block 22 will compress the first pipe 11 and drive the first pipe 11 towards the inside of the installation pipe 12, so that the end of the first pipe 11 compresses and seals the sealing ring 14, thereby ensuring the sealing between the first pipe 11 and the installation pipe 12. After the arc-shaped extrusion block 22 is rotated, the screw rod 24 passes through the through hole 25. By screwing the nut 26 onto the screw rod 24 and making the nut 26 in contact with and compress the arc-shaped extrusion block 22, the fixation of the arc-shaped extrusion block 22 can be completed. When the transmitter body 1 needs to be removed, the nut 26 is removed, and then the arc-shaped extrusion block 22 is rotated away from the first pipe 11, so that the first pipe 11 loses the compression force. The first pipe 11 is rotated so that the through slot 27 corresponds to the arc-shaped extrusion block 22, and then the transmitter body 1 can be removed. The installation and removal of the transmitter body 1 are relatively convenient and fast, and the sealing and stability of the transmitter body 1 can be ensured.

[0031] The support ring 3 is connected to the position corresponding to the sealing ring 14 in the installation pipe 12, and the support ring 3 is used to support and fix the air bag 31.

[0032] The air bag 31 is arranged in the support ring 3, and the air bag 31 is used to enhance the sealing of the sealing ring 14.

[0033] The symmetrical concentration boxes 32 are connected to the position corresponding to the extrusion fixing plate outside the second pipe 13, and the concentration boxes 32 are used to collect gas or liquid.

[0034] The communication pipe 33 is connected between the concentration boxes 32 and the air cylinder 31, the communication pipe 33 penetrates through and is connected to the installation pipe 12, and the communication pipe 33 is used to communicate the concentration boxes 32 and the air cylinder, so that the gas or liquid can flow.

[0035] The piston 34 is slidably connected in the concentration box 32, and the piston 34 is used to push the gas or liquid in the concentration box 32 into the air bag 31 or suck the gas or liquid in the air bag 31 into the concentration box 32.

[0036] The piston 34 is connected with a pressure rod 35 in the middle of the side away from the communication pipe 33, the end of the pressure rod 35 away from the piston 34 penetrates the centralized box 32 and is connected with a pressing ring 36, the pressing ring 36 is attached to the pressing fixed plate 23, through the cooperation of the pressure rod 35 and the pressing ring 36, the pressing fixed plate 23 can press down the piston 34, and the piston 34 pushes the gas or liquid.

[0037] The first spring 37 is connected between the middle of the side of the piston 34 close to the pressure rod 35 and the centralized box 32, and is used for resetting the piston 34, the pressure rod 35 and the pressing ring 36, and can draw the gas or liquid in the air bag 31 into the centralized box 32.

[0038] In specific use, when the transmitter body 1 is installed, the arc-shaped extrusion block 22 is rotated to the position close to the first pipeline 11, in the process of rotation, the arc-shaped extrusion block 22 presses the pressing ring 36, the pressure rod 35 extrudes the piston 34 to the inside of the centralized box 32, in the process of movement, the piston 34 pulls the first spring 37 to stretch and store the restoring force, at the same time, the piston 34 extrudes the gas or liquid in the centralized box 32 into the air bag 31 through the communication pipe 33, so that the air bag 31 is inflated, thereby the sealing between the first pipeline 11 and the installation pipeline 12 can be enhanced. When the transmitter body 1 is removed, the arc-shaped extrusion block 22 is rotated to the position away from the first pipeline 11, after rotation, the arc-shaped extrusion block 22 no longer extrudes the pressing ring 36, the pressing ring 36, the pressure rod 35 and the piston 34 are reset under the action of the first spring 37, in the process of resetting, the piston 34 draws the gas or liquid in the air bag 31 into the centralized box 32, so that the air bag 31 is reduced, thereby the removal of the transmitter body 1 can be avoided.

[0039] The installation pipeline 12 is connected with symmetrically arranged stop blocks 4 outside the position away from the arc-shaped extrusion block 22, the stop blocks 4 are used for blocking the positioning blocks 42, so that the position of the first pipeline 11 is fixed.

[0040] The first pipeline 11 is connected with a vertical plate 43 outside the position corresponding to the stop blocks 4, the vertical plate 43 is connected with symmetrically arranged positioning plates 41 close to the stop blocks 4, the positioning plates 41 are rotationally connected with the positioning blocks 42, the ends of the positioning blocks 42 away from the vertical plate 43 are located between the stop blocks 4, the vertical plate 43 is used for supporting and fixing the positioning plates 41 and the positioning blocks 42, through the cooperation of the positioning blocks 42 and the stop blocks 4, the position of the first pipeline 11 is fixed.

[0041] The second spring 44 is connected between the positioning blocks 42 and the vertical plate 43, and is used for resetting the positioning blocks 42.

[0042] The upper end of one of the blocks 4 is provided with a first chamfer 45 away from the position of the positioning block 42, and the positioning block 42 is provided with a second chamfer 46 corresponding to the first chamfer 45, and the first chamfer 45 and the second chamfer 46 are used in cooperation, so that the positioning block 42 can enter between the blocks 4 through the cooperation of the first chamfer 45 and the second chamfer 46.

[0043] In specific use, when the transmitter body 1 is installed to rotate the first pipeline 11, the positioning block 42 will contact one of the blocks 4, and under the cooperation of the first chamfer 45 and the second chamfer 46, the positioning block 42 is extruded and rotated, and the rotation of the positioning block 42 will extrude the second spring 44, and the second spring 44 will contract and store the restoring force after being extruded, and after the positioning block 42 passes the one of the blocks 4 due to the rotation of the first pipeline 11, the positioning block 42 loses the extrusion and is reset under the action of the restoring force of the second spring 44, so that the positioning block 42 is between the blocks 4, thereby preliminarily fixing the positioning block 42, the first pipeline 11 and the transmitter body 1, preventing the first pipeline 11 from rotating after being fixed, and ensuring the stability of the transformer body.

[0044] It should be noted that in this document, such terms as "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent elements of such processes, methods, articles or devices.

[0045] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application.

Claims

1. An intelligent single crystal silicon diaphragm sealed pressure transmitter characterized by: Including the transmitter body (1), the first pipe (11) is connected to the lower end of the transmitter body (1), and the first pipe (11) is provided with a mounting pipe (12) away from the one end of the transmitter body (1). The first pipe (11) is inserted into the mounting pipe (12), and the second pipe (13) is connected to the one end of the mounting pipe (12) away from the transmitter body (1); The one end of the first pipe (11) close to the mounting pipe (12) is connected with a sealing ring (14), and the sealing ring (14) is attached to the inner wall of the mounting pipe (12); The outer side of the first pipe (11) is provided with an annular compression slot (2), and the mounting pipe (12) is provided with a symmetrical movable slot (21) corresponding to the position of the annular compression slot (2). The movable slot (21) is rotatably connected with an arc-shaped extrusion block (22), the shape of the arc-shaped extrusion block (22) close to the end of the first pipe (11) is the same as that of the annular compression slot (2), and the arc-shaped extrusion block (22) is attached to the annular compression slot (2).

2. The intelligent single crystal silicon diaphragm sealed pressure transmitter according to claim 1, characterized in that: The one end of the first pipe (11) away from the transmitter body (1) is provided with a symmetrical through groove (27) corresponding to the position of the arc-shaped extrusion block (22), and the arc-shaped extrusion block (22) is intermittently connected in the through groove (27).

3. The intelligent single crystal silicon diaphragm sealed pressure transmitter according to claim 2, characterized in that: The one end of the arc-shaped extrusion block (22) away from the annular compression slot (2) is connected with a pressing fixed plate (23), and the second pipe (13) is connected with a symmetrical screw rod (24) corresponding to the position of the pressing fixed plate (23). The one end of the screw rod (24) away from the second pipe (13) is threadedly connected with a nut (26).

4. The intelligent single crystal silicon diaphragm sealed pressure transmitter according to claim 3, characterized in that: The nut (26) is attached to the pressing fixed plate (23), the pressing fixed plate (23) is provided with a through hole (25) corresponding to the position of the screw rod (24), the screw rod (24) penetrates through the through hole (25), and the diameter of the through hole (25) is larger than the diameter of the screw rod (24).

5. The intelligent monocrystalline silicon diaphragm sealed pressure transmitter of claim 4, wherein: The mounting pipe (12) is connected with a support ring (3) corresponding to the position of the sealing ring (14) in the mounting pipe (12), and the support ring (3) is provided with an air bag (31). The outer side of the second pipe (13) is connected with a symmetrical concentrating box (32) corresponding to the position of the extrusion fixed plate, and the concentrating box (32) and the air bag (31) are connected with a communication pipe (33). The communication pipe (33) penetrates through the mounting pipe (12) and is connected with the mounting pipe (12).

6. A smart monocrystalline silicon diaphragm sealed pressure transmitter according to claim 5, characterized in that: The concentrating box (32) is slidably connected with a piston (34), and the middle part of the one side of the piston (34) away from the communication pipe (33) is connected with a pressure rod (35). The one end of the pressure rod (35) away from the piston (34) penetrates through the concentrating box (32) and is connected with a pressing ring (36), and the pressing ring (36) is attached to the pressing fixed plate (23). The first spring (37) is connected between the middle part of the one side of the piston (34) close to the pressure rod (35) and the concentrating box (32).

7. A smart monocrystalline silicon diaphragm sealed pressure transmitter according to claim 6, characterized in that: The installation pipeline (12) is connected with symmetrically arranged stoppers (4) outside the position far away from the arc-shaped extrusion block (22), the first pipeline (11) is connected with vertical plates (43) outside the position corresponding to the stoppers (4), the side close to the stoppers (4) of the vertical plates (43) is connected with symmetrically arranged positioning plates (41), the positioning plates (41) are rotatably connected with positioning blocks (42) between them, and the end of the positioning blocks (42) far away from the vertical plates (43) is located between the stoppers (4).

8. The intelligent monocrystalline silicon diaphragm sealed pressure transmitter of claim 7, wherein: The positioning blocks (42) are connected with the vertical plates (43) with second springs (44), a first chamfer (45) is formed in the position far away from the positioning blocks (42) on the upper end of one of the stoppers (4), a second chamfer (46) is formed in the position corresponding to the first chamfer (45) of the positioning blocks (42), and the first chamfer (45) and the second chamfer (46) are used in cooperation.

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