CN209342275U - A kind of WWH type pressure transmitter - Google Patents

Abstract

The utility model discloses a kind of WWH type pressure transmitters, including main body, protect shell, external power supply and presser sensor diaphragm, the outer surface of main body is fixedly connected with the inner surface of protection shell, the inside of main body is arranged in presser sensor diaphragm, outer surface at left and right sides of protection shell is threaded with protection cap, the bottom of main body is fixedly connected with connection screw thread column, the outer surface thread of connection screw thread column is connected with fastening nut, the top of protection shell front and rear sides offers pressure interface, the inside of protection shell is fixedly connected with adjustment screw, the utility model relates to pressure transmitter technical fields.The WWH type pressure transmitter, it connects simple and convenient, sensor is manufactured using the highly integrated mode of amplifying circuit simultaneously, the structure for solving existing pressure transmitter is excessively complicated, cause the sensitivity of device lower, and then cause the precision of device too low, while anti-overload ability is weak, can not test effect more preferable to user the problem of.

Description

A kind of WWH type pressure transmitter

Technical field

The utility model relates to pressure transmitter technical field, specially a kind of WWH type pressure transmitter.

Background technique

Pressure transmitter refers to export the pressure sensor for standard signal, is that a kind of pressure variations that receive turn in proportion It is changed to the instrument of standard output signals.It can turn the physical pressures parameters such as gas, liquid that load cell is experienced Become the electric signal of standard, is measured, indicated and process with supplying the secondary meters such as indicator alarm, recorder, adjuster It adjusts.Pressure transmitter is a kind of sensor the most commonly used in industrial practice, is widely used in various industrial automatic control environment, It is related to water conservancy and hydropower, railway traffic, intelligent building, production automatic control, aerospace, military project, petrochemical industry, oil well, electric power, ship, machine Numerous industries such as bed, pipeline.

Pressure transmitter can be carried out measuring to wind, water and oil pressure, but the structure of existing pressure transmitter is excessively Complexity causes the sensitivity of device lower, and then causes the precision of device too low, while anti-overload ability is weak, can not be to use The better test effect in family influences the practical judgement of user, and some accurate experiments is caused error occur so that failure.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of WWH type pressure transmitter, solves existing pressure The structure of power transmitter is excessively complicated, causes the sensitivity of device lower, and then causes the precision of device too low, while overload-resistant The problem of ability is weak, can not be to user's more preferable test effect.

In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of WWH type pressure inverting Device, including main body, protection shell, external power supply and presser sensor diaphragm, the outer surface of the main body and the interior table of protection shell Face is fixedly connected, and the inside of main body, the equal spiral shell in outer surface at left and right sides of the protection shell is arranged in the presser sensor diaphragm Line is connected with protection cap, and the bottom of the main body is fixedly connected with connection screw thread column, and the outer surface thread of connection screw thread column connects It is connected to fastening nut, the top of the protection shell front and rear sides offers pressure interface, and the inside of the protection shell is solid Surely it is connected with adjustment screw, the presser sensor diaphragm includes Wheatstone bridge, change route and load resistance, the favour stone The surface of electric bridge is electrically connected by conducting wire and change route, and the surface of the change route is electrical by conducting wire and load resistance Connection.

Preferably, the anode of the external power supply is electrically connected by conducting wire and positive screw, and the external power supply is born Pole is connected with digital display meter by conducting wire, and the anode of the digital display meter is connected with ammeter, the anode of the ammeter by conducting wire It is electrically connected by conducting wire and cathode screw.

Preferably, the Wheatstone bridge forms resistance using techniques such as diffusion or ion implantings and is formed by connecting, described Presser sensor diaphragm is formed under Wheatstone bridge using micromachining technology.

Preferably, the protection shell is fabricated using diecasting alloys aluminum material, and the outer surface of shell is protected to use Spray painting processing, the main body are fabricated using 1Cr18Ni9T material.

Preferably, the pressure interface uses M20*1.5 bore screw thread.

Beneficial effect

The utility model provides a kind of WWH type pressure transmitter.Have compared with prior art it is following the utility model has the advantages that

(1), the WWH type pressure transmitter is fixedly connected with connection screw thread column, connection screw thread column by the bottom in main body Outer surface thread be connected with fastening nut, the top of protection shell front and rear sides offers pressure interface, protects shell Inside is fixedly connected with adjustment screw, and presser sensor diaphragm includes Wheatstone bridge, change route and load resistance, favour stone electricity The surface of bridge is electrically connected by conducting wire and change route, and the surface of change route is electrically connected by conducting wire and load resistance, Cooperate main body, connection screw thread column, fastening nut, pressure interface, adjustment screw, presser sensor diaphragm, Wheatstone bridge, change line The setting on road and load resistance, connection is simple and convenient, while manufacturing sensor using the highly integrated mode of amplifying circuit, solves The structure of existing pressure transmitter is excessively complicated, causes the sensitivity of device lower, and then causes the precision of device too low, together When anti-overload ability it is weak, can not be to user's more preferable test effect the problem of.

(2), the WWH type pressure transmitter is fixedly connected with the inner surface of protection shell by the outer surface in main body, is protected Shield shell is fabricated using diecasting alloys aluminum material, and the outer surface of shell is protected to handle using spray painting, and main body uses 1Cr18Ni9T material is fabricated, and cooperation main body and the setting for protecting shell avoid main body from being directly exposed to air, to master Body is protected, and enhances anti-interference ability, while spray painting processing is done on surface, increases the acid-alkali-resistant degree of device, anticorrosive, so that dress Set long time stability.

Detailed description of the invention

Fig. 1 is the external structure schematic diagram of the utility model；

Fig. 2 is the side view of the utility model structure；

Fig. 3 is the adjusting circuit connection diagram of the utility model；

Fig. 4 is the circuit connection diagram of the utility model presser sensor diaphragm.

In figure: 1-main body, 2-protection shells, 3-external power supplys, 4-presser sensor diaphragms, 5-protection caps, 6-are even Connect threaded post, 7-fastening nuts, 8-pressure interfaces, 9-adjustment screws, 10-load resistances, 11-digital display meters, 12-electric currents Table, 13-Wheatstone bridges, 14-change routes.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-4 is please referred to, the utility model provides a kind of technical solution: a kind of WWH type pressure transmitter, including main body 1, Shell 2, external power supply 3 and presser sensor diaphragm 4 are protected, the outer surface of main body 1 is fixedly connected with the inner surface of protection shell 2, Protection shell 2 is fabricated using diecasting alloys aluminum material, and the outer surface of shell 2 is protected to handle using spray painting, and main body 1 uses 1Cr18Ni9T material is fabricated, and cooperation main body 1 and the setting for protecting shell 2 avoid main body 1 from being directly exposed to air, right Main body 1 is protected, and enhances anti-interference ability, while spray painting processing is done on surface, increases the acid-alkali-resistant degree of device, anticorrosive, is made Device long time stability is obtained, the inside of main body 1 is arranged in presser sensor diaphragm 4, and the outer surface of 2 left and right sides of protection shell is equal It is threaded with protection cap 5, the bottom of main body 1 is fixedly connected with connection screw thread column 6, and the outer surface thread of connection screw thread column 6 connects It is connected to fastening nut 7, the top of protection 2 front and rear sides of shell offers pressure interface 8, and pressure interface 8 uses M20*1.5 mouthfuls Diameter screw thread, pressure interface 8 design the screw thread matched according to actual requirement, and the inside of protection shell 2 is fixedly connected with adjustment spiral shell Silk 9, presser sensor diaphragm 4 include Wheatstone bridge 13, change route 14 and load resistance 10, and the surface of Wheatstone bridge 13 is logical It crosses conducting wire and change route 14 is electrically connected, the surface of change route 14 is electrically connected by conducting wire and load resistance 10, cooperation Main body 1, fastening nut 7, pressure interface 8, adjustment screw 9, presser sensor diaphragm 4, Wheatstone bridge 13, turns connection screw thread column 6 The setting on loop wire road 14 and load resistance 10, connection is simple and convenient, while manufacturing sensing using the highly integrated mode of amplifying circuit Device, the structure for solving existing pressure transmitter is excessively complicated, causes the sensitivity of device lower, and then leads to the essence of device Spend low, while anti-overload ability is weak, can not test effect more preferable to user the problem of, the anode of external power supply 3 is by leading Line and positive screw are electrically connected, and the cathode of external power supply 3 is connected with digital display meter 11 by conducting wire, and the anode of digital display meter 11 passes through Conducting wire is connected with ammeter 12, and the anode of ammeter 12 is electrically connected by conducting wire and cathode screw, and Wheatstone bridge 13 uses Diffusion or the techniques such as ion implanting form resistance and are simultaneously formed by connecting, presser sensor diaphragm 4 using micromachining technology favour this Energization bridge 13 is lower to be formed.

When work, instrument to be measured is connected into pressure interface 8, when pressure acts on pressure sensitive film by pressure interface 8 When on piece 4, resistance value changes and generates a linearisation output signal directly proportional to actuating pressure, in favour stone electricity DC power supply is added on bridge 13, will generate the output of a d. c. voltage signal, by two times transfer route 14, realizes two lines 4-20ma output processed.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of WWH type pressure transmitter, including main body (1), protection shell (2), external power supply (3) and presser sensor diaphragm (4), the outer surface of the main body (1) is fixedly connected with the inner surface of protection shell (2), presser sensor diaphragm (4) setting In the inside of main body (1), it is characterised in that: the outer surface at left and right sides of protection shell (2) is threaded with protection cap (5), the bottom of the main body (1) is fixedly connected with connection screw thread column (6), and the outer surface thread connection of connection screw thread column (6) Have fastening nut (7), the top of described protection shell (2) front and rear sides offers pressure interface (8), the protection shell (2) inside is fixedly connected with adjustment screw (9), and the presser sensor diaphragm (4) includes Wheatstone bridge (13), change route (14) it is electrically connected with load resistance (10), the surface of the Wheatstone bridge (13) by conducting wire and change route (14), institute The surface for stating change route (14) is electrically connected by conducting wire and load resistance (10).

2. a kind of WWH type pressure transmitter according to claim 1, it is characterised in that: the anode of the external power supply (3) It is electrically connected by conducting wire and positive screw, the cathode of the external power supply (3) is connected with digital display meter (11) by conducting wire, described The anode of digital display meter (11) is connected with ammeter (12) by conducting wire, and the anode of the ammeter (12) passes through conducting wire and cathode spiral shell Silk is electrically connected.

3. a kind of WWH type pressure transmitter according to claim 1, it is characterised in that: the Wheatstone bridge (13) is adopted Resistance is formed with techniques such as diffusion or ion implantings and is formed by connecting, and the presser sensor diaphragm (4) uses micromachined skill Art is formed under Wheatstone bridge (13).

4. a kind of WWH type pressure transmitter according to claim 1, it is characterised in that: the protection shell (2) is using pressure Cast alloy aluminum material is fabricated, and the outer surface of shell (2) is protected to handle using spray painting, and the main body (1) uses 1Cr18Ni9T material is fabricated.

5. a kind of WWH type pressure transmitter according to claim 1, it is characterised in that: the pressure interface (8) uses M20*1.5 bore screw thread.