Anti-corrosion differential pressure transmitter

Abstract

The utility model discloses an anti-corrosion differential pressure transmitter which comprises a differential pressure transmitting shell, the upper side of the differential pressure transmitting shell is provided with a display screen through a signal amplifier, a silicon piezoresistive sensor is installed inside the differential pressure transmitting shell, measuring parts of the differential pressure transmitting shell are all provided with fixing pipes, the front ends of the fixing pipes are all provided with connecting pipes, and the connecting pipes are connected with the display screen. The front end of each connecting pipe is rotationally connected with a connecting flange through a sealing bearing, a polyurethane coating is arranged in the wall body of the differential pressure transmitting shell, and the differential pressure transmitting device further comprises a connecting mechanism; the connecting mechanism comprises an L-shaped clamping groove, an L-shaped clamping seat and a locking assembly, and according to the anti-corrosion type differential pressure transmitter, through the transmission element, by means of rotary clamping and magnetic adsorption, installation, fixation and reverse sliding locking of the pipeline connecting part of the anti-corrosion type differential pressure transmitter are achieved; the anti-corrosion differential pressure transmitter pipeline connecting part is prevented from retreating and slipping due to external interference, the device pipeline connecting part does not need to rotate for multiple circles, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a differential pressure transmitter technical field, concretely is a kind of anticorrosive differential pressure transmitter. BACKGROUND

[0002] Differential pressure transmitter is a kind of equipment for measuring pressure change, is widely used in industrial production, through internal measuring element, the pressure of fluid can be accurately calculated, this technique has been widely applied in petroleum, chemical industry, pharmaceutical industry, etc., differential pressure transmitter is improved by anticorrosive design its scope of application, in prior art: the patent with the authorization publication number CN217605168 U discloses a kind of strong anticorrosive differential pressure transmitter, including strong anticorrosive differential pressure transmitter body, the outer surface of the strong anticorrosive differential pressure transmitter body is fixedly connected with connecting block, the bottom of the connecting block is fixedly connected with mounting plate, the bottom of the mounting plate is fixedly connected with the symmetrically clamping block, the bottom plate is equipped in the lower of the mounting plate, the upper surface of the bottom plate is equipped with sliding slot, the inner wall of the sliding slot is slidably connected with two sliding blocks, the upper surface of each sliding block is equipped with clamping groove, the bottom end of each clamping block extends to the inside of clamping groove, the side face of two clamping blocks, which are away from each other, is fixedly connected with slide plate, the upper surface of the bottom plate is fixedly connected with the symmetrically fixed block, this strong anticorrosive differential pressure transmitter reaches the effect that is convenient to install, improves the installation efficiency of strong anticorrosive differential pressure transmitter, can make strong anticorrosive differential pressure transmitter more stable after installation, will better application of strong anticorrosive differential pressure transmitter, the strong anticorrosive differential pressure transmitter and external pipeline connection port adopt screw connection mode, this process needs to rotate connecting pipeline multiple times to realize the screw fastening between the both, however, during the use of the device, the spiral connection part of the strong anticorrosive differential pressure transmitter can appear to slide back due to the interference of the flowing vibration of the detected material or the external working environment, and the connecting part needs to be rotated multiple times each time the strong anticorrosive differential pressure transmitter is installed or disassembled, and improvement is needed, therefore, we propose a kind of anticorrosive differential pressure transmitter. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem to overcome the existing defects, provide a kind of anticorrosive differential pressure transmitter, the device is through transmission element, utilizes rotation clamping and magnetic adsorption, to realize the installation and fixation of anticorrosive differential pressure transmitter pipeline connection part and reverse slide locking, avoid anticorrosive differential pressure transmitter pipeline connection part to appear slide back due to external interference, and device pipeline connection part does not need multiple circle rotation operation, it is easy to operate, can effectively solve the problems in background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: A kind of anticorrosive differential pressure transmitter, including differential pressure transmitter shell, the upper side of the differential pressure transmitter shell is equipped with display screen by signal amplifier, silicon piezoresistive sensor is installed in the inside of differential pressure transmitter shell, the measuring part of differential pressure transmitter shell is equipped with fixed tube, the front end of fixed tube is all equipped with connecting pipe, the front end of connecting pipe is all rotatably connected with connecting flange by sealing bearing, the wall of differential pressure transmitter shell is equipped with polyurethane coating, further including connecting mechanism;

[0005] Connecting mechanism: it includes L type clamping groove, L type clamping seat and locking assembly, the outside of fixed tube is respectively provided with L type clamping groove, the rear side of connecting pipe is all equipped with L type clamping seat, L type clamping seat is all rotatably connected with vertically adjacent L type clamping groove, locking assembly is all equipped between L type clamping groove and vertically adjacent L type clamping seat, the device is fixed by transmission element, and the installation of anticorrosive differential pressure transmitter pipeline connecting part is realized by rotating clamping and magnetic adsorption and reverse anti-skid locking, avoid anticorrosive differential pressure transmitter pipeline connecting part from appearing anti-skid phenomenon due to external interference, and device pipeline connecting part does not need to rotate operation, and it is convenient to operate.

[0006] Further, the inside of the differential pressure transmitter shell is provided with a metal foil, the right side of the metal foil is fixedly connected with a silicon pressure diaphragm in the silicon piezoresistive sensor, and the silicon pressure diaphragm is deformed under pressure to measure the differential pressure of the substance in the anticorrosive differential pressure transmitter.

[0007] Further, the locking assembly includes an arc-shaped groove, an iron seat, a groove, and a magnet, the arc-shaped groove is respectively provided in the inside of the L-shaped clamping seat, the iron seat is slidably connected in the inside of the arc-shaped groove, the groove is provided in the inside of the L-shaped clamping groove, the magnet is provided in the inside of the groove, the magnet is magnetically adsorbed with the vertically adjacent iron seat, and the iron seat is slidably inserted with the vertically adjacent groove, to lock the pipeline connecting part in the anticorrosive differential pressure transmitter.

[0008] Further, the locking assembly further includes a knob, the knob is arranged on the outer arc surface of the iron seat, to facilitate the position adjustment of the iron seat in the anticorrosive differential pressure transmitter.

[0009] Further, the front side of the fixed tube is provided with a rubber sealing ring, to seal the connection gap between the fixed tube and the connecting pipe in the anticorrosive differential pressure transmitter.

[0010] Further, the inside of the fixed tube is provided with a filter screen, to filter impurities of the substance entering the anticorrosive differential pressure transmitter.

[0011] Further, the left and right ends of the inside of the differential pressure transmitting shell are provided with stop seats through uniformly distributed connecting rods, and the opposite faces of the two stop seats are provided with arc-shaped flow guide plates, which protect the detection unit in the corrosion-resistant differential pressure transmitter from material impact.

[0012] Compared with the prior art, the anti-corrosion differential pressure transmitter has the following advantages:

[0013] When the anti-corrosion differential pressure transmitter is used, the L-shaped clamping groove, the L-shaped clamping seat and the locking assembly are used to realize the installation and fixing and reverse anti-slip locking of the pipeline connection part of the anti-corrosion differential pressure transmitter through rotation clamping and magnetic adsorption, so that the anti-corrosion differential pressure transmitter pipeline connection part is prevented from slipping due to external interference, and the pipeline connection part of the device does not need to be rotated for many times, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a split structural schematic diagram of the utility model;

[0016] Figure 3 It is a sectional structural schematic diagram of the utility model;

[0017] Figure 4 It is an enlarged structural schematic diagram of A of the utility model;

[0018] Figure 5 It is an enlarged structural schematic diagram of B of the utility model.

[0019] In the drawing: 1, differential pressure transmitting shell, 2, signal amplifier, 3, display screen, 4, metal foil, 5, silicon piezoresistive sensor, 6, fixed pipe, 7, connecting pipe, 8, connecting flange, 9, connecting mechanism, 91, L-shaped clamping groove, 92, L-shaped clamping seat, 93, locking assembly, 931, arc-shaped groove, 932, iron seat, 933, knob, 934, groove, 935, magnet, 10, rubber sealing ring, 11, filter screen, 12, connecting rod, 13, stop seat, 14, arc-shaped flow guide plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-5The embodiment provides a technical scheme: a kind of anticorrosive differential pressure transmitter, including differential pressure transmitter shell 1, the upper side of differential pressure transmitter shell 1 is equipped with display screen 3 by signal amplifier 2, silicon piezoresistive sensor 5 is installed in the inside of differential pressure transmitter shell 1, the measuring part of differential pressure transmitter shell 1 is equipped with fixed tube 6, the front end of fixed tube 6 is equipped with connecting pipe 7, the front end of connecting pipe 7 is rotatably connected with connecting flange 8 by sealing bearing, polyurethane coating is equipped in the wall of differential pressure transmitter shell 1, metal foil 4 is equipped in the inside of differential pressure transmitter shell 1, the right side of metal foil 4 is fixedly connected with the silicon pressure diaphragm in silicon piezoresistive sensor 5, the input end of silicon piezoresistive sensor 5 is electrically connected with external power supply, the output end of silicon piezoresistive sensor 5 is electrically connected with the input end of display screen 3 by signal amplifier 2, when using anticorrosive differential pressure transmitter, the inside of device is sprayed with polyurethane coating, the wear resistance, chemical corrosion resistance, elasticity and adhesion of polyurethane coating itself are excellent, and it belongs to environmental protection type raw material, corrosion contact separation between the inside wall of anticorrosive differential pressure transmitter and detection material is carried out by polyurethane coating, the corrosion resistance of differential pressure transmitter is improved, when using device, the connecting end of external measuring pipeline is connected and fixed with the left connecting flange 8 by bolt, the left side in the inside of differential pressure transmitter shell 1 is positive pressure chamber, when carrying out differential pressure measurement to material, material enters the left cavity in the inside of differential pressure transmitter shell 1 by external measuring pipeline, connecting pipe 7 and fixed tube 6, then material contacts metal foil 4 and exerts pressure on it, the silicon pressure diaphragm of silicon piezoresistive sensor 5 deforms along with metal foil 4, silicon piezoresistive sensor 5 generates electrical signal by the bending deformation of silicon pressure diaphragm, so that the differential pressure value of material is measured, and the measurement result is transmitted to signal amplifier 2 in the form of electrical signal, the signal is amplified by the amplifying circuit in signal amplifier 2, and the amplified electrical signal is transmitted to display screen 3, data display is carried out by display screen 3, and further include connecting mechanism 9;

[0022] The connecting mechanism 9 comprises L-shaped clamping grooves 91, L-shaped clamping seats 92 and locking assemblies 93, the L-shaped clamping grooves 91 are respectively arranged on the outer side of the fixed pipes 6, the rear side of the connecting pipes 7 is respectively provided with the L-shaped clamping seats 92, the L-shaped clamping seats 92 are respectively rotationally connected with the longitudinally adjacent L-shaped clamping grooves 91, the L-shaped clamping grooves 91 and the longitudinally adjacent L-shaped clamping seats 92 are respectively provided with the locking assemblies 93, the locking assemblies 93 comprise arc-shaped grooves 931, iron seats 932, grooves 934 and magnets 935, the arc-shaped grooves 931 are respectively arranged in the inner side of the L-shaped clamping seats 92, the iron seats 932 are respectively slidably connected in the inner side of the arc-shaped grooves 931, the grooves 934 are respectively arranged in the inner side of the L-shaped clamping grooves 91, the magnets 935 are respectively arranged in the inner side of the grooves 934, the magnets 935 are respectively magnetically adsorbed with the longitudinally adjacent iron seats 932, the iron seats 932 are respectively slidably inserted into the longitudinally adjacent grooves 934, the locking assemblies 93 further comprise knobs 933, the knobs 933 are respectively arranged on the outer arc surface of the iron seats 932, the front side of the fixed pipes 6 is respectively provided with rubber sealing rings 10, when the fixed pipes 6 and the connecting pipes 7 of the anti-corrosion differential pressure transmitter are connected and fixed, the staff holds the connecting pipes 7 to make the L-shaped clamping seats 92 longitudinally and deeply enter into the corresponding L-shaped clamping grooves 91, then rotates the L-shaped clamping seats 92 to make the rear end of the L-shaped clamping seats 92 rotationally and deeply enter into the corresponding L-shaped clamping grooves 91, in this process, because the L-shaped corner of the L-shaped clamping grooves 91 is provided with an arc-shaped chamfer, the deep end of the L-shaped clamping seats 92 is in extrusion contact with the arc-shaped chamfer through rotation, and the extrusion sliding between the two parts makes the connecting pipes 7 and the longitudinally adjacent fixed pipes 6 gradually close to each other, when the L-shaped clamping seats 92 completely rotationally and deeply enter into the corresponding L-shaped clamping grooves 91, the rubber sealing rings 10 are extruded by the contact surface between the fixed pipes 6 and the connecting pipes 7, thereby sealing the connecting gap between the fixed pipes 6 and the longitudinally adjacent connecting pipes 7, at this moment, the iron seats 932 and the longitudinally adjacent arc-shaped grooves 931 are longitudinally aligned, then under the magnetic adsorption of the magnets 935 to the iron seats 932, the front end of the iron seats 932 is slidably inserted into the grooves 934 along the arc-shaped grooves 931, the sliding insertion between the iron seats 932 and the corresponding grooves 934 limits the reverse movement of the rotationally and insertingly connected L-shaped clamping seats 92 and L-shaped clamping grooves 91, thereby avoiding the reverse sliding phenomenon between the two parts, when the anti-corrosion differential pressure transmitter is maintained, the knobs 933 are only needed to be pulled to make the iron seats 932 completely slide into the corresponding arc-shaped grooves 931, then the reverse rotation of the connecting pipes 7 is used to remove the rotationally and insertingly connected L-shaped clamping seats 92 and L-shaped clamping grooves 91, then the anti-corrosion differential pressure transmitter connecting pipes 7 are pulled out, the operation is convenient, the device uses the rotationally connected and magnetically adsorbed transmission elements to realize the installation and fixation of the pipeline connecting part of the anti-corrosion differential pressure transmitter and the reverse sliding locking, thereby avoiding the reverse sliding phenomenon of the pipeline connecting part of the anti-corrosion differential pressure transmitter due to external interference, and the pipeline connecting part of the device does not need to be rotationally operated for many times, the operation is convenient.

[0023] The inside of the fixed pipe 6 is provided with a filter screen 11, the inside of the differential pressure transmitter shell 1 is provided with a stop seat 13 at the left and right ends through evenly distributed connecting rods 12, the opposite faces of the two stop seats 13 are provided with arc-shaped flow guide plates 14, the impurities of the material entering the device are filtered through the filter screen 11, so as to avoid the interference of the impurities on the measurement results of the silicon piezoresistive sensor 5 due to the adsorption of the silicon pressure diaphragm of the silicon piezoresistive sensor 5, when the material enters the left cavity inside the differential pressure transmitter shell 1 along the pipeline, the material first contacts the left stop seat 13 under the action of its own pressure, the flow of the material entering the differential pressure transmitter shell 1 is buffered and intercepted through the stop seat 13, so as to reduce the initial kinetic energy of the material entering the differential pressure transmitter shell 1, then the material collides with the wall of the cavity inside the differential pressure transmitter shell 1 along the arc-shaped flow guide plate 14 on the stop seat 13, so as to reduce the initial kinetic energy of the material entering the differential pressure transmitter shell 1 again, so as to avoid the damage of the metal foil 4 and the silicon pressure diaphragm due to the large flow impact of the material.

[0024] The working principle of the anti-corrosion differential pressure transmitter is as follows: the input end of the silicon piezoresistive sensor 5 is electrically connected with an external power supply, the output end of the silicon piezoresistive sensor 5 is electrically connected with the input end of the display screen 3 through the signal amplifier 2, when the anti-corrosion differential pressure transmitter is used, the inside of the device is sprayed with a polyurethane coating, the polyurethane coating has excellent wear resistance, chemical corrosion resistance, elasticity and adhesion, and belongs to an environmentally friendly raw material, the polyurethane coating is used to separate the inside wall of the anti-corrosion differential pressure transmitter and the detected material, the corrosion resistance of the differential pressure transmitter is improved, when the device is used, the connecting end of the external measuring pipeline is connected and fixed with the left connecting flange 8 through bolts, the left side of the inside of the differential pressure transmitter shell 1 is a positive pressure chamber, when the differential pressure of the material is measured, the material enters the inside left chamber of the differential pressure transmitter shell 1 through the external measuring pipeline, the connecting pipe 7 and the fixed pipe 6, the material entering the device is impurity filtered through the filter screen 11, so that the silicon pressure diaphragm of the silicon piezoresistive sensor 5 is prevented from being interfered with by the impurities adsorbed to the silicon pressure diaphragm, when the material enters the inside left chamber of the differential pressure transmitter shell 1 along the pipeline, the material is first in impact contact with the left side of the impact seat 13 under the action of the pressure of the material itself, the material entering the differential pressure transmitter shell 1 is flow buffered and intercepted through the impact seat 13, so that the initial kinetic energy of the material entering the differential pressure transmitter shell 1 is reduced, then the material collides with the wall of the inside chamber of the differential pressure transmitter shell 1 along the arc-shaped flow guide plate 14 on the impact seat 13, the initial kinetic energy of the material entering the differential pressure transmitter shell 1 is reduced again, so that the metal foil 4 and the silicon pressure diaphragm are prevented from being damaged due to the flow impact of the material, then the material contacts the metal foil 4 and exerts pressure on the metal foil 4, the silicon pressure diaphragm of the silicon piezoresistive sensor 5 deforms along the metal foil 4, the silicon piezoresistive sensor 5 generates an electric signal through the bending deformation of the silicon pressure diaphragm, so that the differential pressure value of the material is measured, and the measurement result is transmitted to the signal amplifier 2 in the form of an electric signal, the signal is amplified through the amplifying circuit in the signal amplifier 2, and the amplified electric signal is transmitted to the display screen 3, data is displayed through the display screen 3, when the fixed pipe 6 and the connecting pipe 7 of the anti-corrosion differential pressure transmitter are connected and fixed, the worker holds the connecting pipe 7 so that the L-shaped clamping seat 92 is longitudinally deeply inserted into the corresponding L-shaped clamping groove 91, then the L-shaped clamping seat 92 is rotated so that the rear end of the L-shaped clamping seat 92 is rotationally deeply inserted into the corresponding L-shaped clamping groove 91, in this process, since the L-shaped corner of the L-shaped clamping groove 91 is provided with an arc-shaped chamfer, the deeply inserted end of the L-shaped clamping seat 92 is in extrusion contact with the arc-shaped chamfer through rotation, and is in extrusion sliding between the two, so that the connecting pipe 7 and the longitudinally adjacent fixed pipe 6 are gradually close to each other, when the L-shaped clamping seat 92 is completely rotationally deeply inserted into the corresponding L-shaped clamping groove 91, the rubber sealing ring 10 is extruded by the contact surface between the fixed pipe 6 and the connecting pipe 7, so that the connecting gap between the fixed pipe 6 and the longitudinally adjacent connecting pipe 7 is sealed, at the same time, the iron seat 932 is longitudinally aligned with the longitudinally adjacent arc-shaped groove 931,Subsequently, under the magnetic adsorption of the magnet 935 to the iron seat 932, the front end of the iron seat 932 slides and inserts into the groove 934 along the arc-shaped groove 931, and the sliding insertion of the iron seat 932 and the corresponding groove 934 limits the reverse movement of the rotating insertion of the L-shaped clamping seat 92 and the L-shaped clamping groove 91, avoids the reverse sliding phenomenon between the two, and in the later maintenance of the corrosion-resistant differential pressure transmitter, only the knob 933 is pulled to make the iron seat 932 completely slide into the corresponding arc-shaped groove 931, and then the reverse connection pipe 7 is disconnected to release the rotating insertion relationship between the L-shaped clamping seat 92 and the L-shaped clamping groove 91, and then the corrosion-resistant differential pressure transmitter connection pipe 7 is pulled out, which is convenient to operate.

[0025] It is worth noting that the display screen 3 disclosed in the above embodiment can adopt TPC1570Gi, and the silicon piezoresistive sensor 5 can adopt HT12 silicon piezoresistive pressure sensor.

[0026] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation obtained by using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A kind of anticorrosive type differential pressure transmitter, including differential pressure transmitter shell (1), the upper side of the differential pressure transmitter shell (1) is equipped with display screen (3) by signal amplifier (2), silicon piezoresistor sensor (5) is installed in the inside of differential pressure transmitter shell (1), the measuring part of differential pressure transmitter shell (1) is equipped with fixed pipe (6), the front end of fixed pipe (6) is equipped with connecting pipe (7), the front end of connecting pipe (7) is rotatably connected with connecting flange (8) by sealing bearing, the wall of differential pressure transmitter shell (1) is equipped with polyurethane coating, it is characterized by: Also include connecting mechanism (9); Connecting mechanism (9): it includes L type card slot (91), L type card seat (92) and locking assembly (93), the L type card slot (91) is opened respectively in the outside of fixed pipe (6), the rear side of connecting pipe (7) is equipped with L type card seat (92), L type card seat (92) is all with longitudinally adjacent L type card slot (91) rotationally connected, L type card slot (91) and longitudinally adjacent L type card seat (92) between all are equipped with locking assembly (93).

2. A corrosion-proof differential pressure transmitter according to claim 1, characterized in that: The inside of the differential pressure transmitter shell (1) is provided with a metal foil (4), and the right side of the metal foil (4) is fixedly connected with the silicon pressure diaphragm in the silicon piezoresistive sensor (5).

3. A corrosion-proof differential pressure transmitter according to claim 1, characterized in that: The locking assembly (93) includes an arc-shaped groove (931), an iron seat (932), a groove (934), and a magnet (935), the arc-shaped groove (931) is respectively opened in the inside of the L type card seat (92), the iron seat (932) is slidably connected in the inside of the arc-shaped groove (931), the groove (934) is opened in the inside of the L type card slot (91), the magnet (935) is arranged in the inside of the groove (934), the magnet (935) is magnetically adsorbed with the longitudinally adjacent iron seat (932), and the iron seat (932) is slidably connected with the longitudinally adjacent groove (934).

4. A corrosion-proof differential pressure transmitter according to claim 3, characterized in that: The locking assembly (93) further includes a knob (933), and the knob (933) is arranged on the outer arc surface of the iron seat (932).

5. A corrosion-proof differential pressure transmitter according to claim 1, characterized in that: The front side of the fixed pipe (6) is provided with a rubber sealing ring (10).

6. A corrosion-proof differential pressure transmitter according to claim 1, characterized in that: The inside of the fixed pipe (6) is provided with a filter screen (11).

7. A corrosion-proof differential pressure transmitter according to claim 1, characterized in that: The inside of the differential pressure transmitter shell (1) is provided with a shock stop seat (13) through evenly distributed connecting rods (12) at both ends, and the opposite surfaces of the two shock stop seats (13) are provided with arc-shaped drainage plates (14).

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