CN206132300U - Buffer based on pressure transmitter - Google Patents

Abstract

The utility model provides a buffer based on pressure transmitter, include: cushion sub, and set up in cushion sub's the inside and pressure transmitter process connector thread assorted recess of one end, the screw is filled to the hexagonal in cushion sub's inside being equipped with of the other end, interior hexagonal is filled the screw and is passed through the connection of capillary subassembly the recess bottom. The buffer is through setting up cushion sub, cushion sub is inside be equipped with in the hexagonal fill the screw screw is filled to the hexagonal including, inside the edge be equipped with three through -hole, pulse stress when reaching buffer medium and introduce through the through -hole in the transmission course to when the absolute pressure that can shut out power changer is measured in high speed pulse atmospheric pressure or hydraulic pressure environment, the easy impaired problem of sensor, this buffer structure is simple, easily installs at the scene, can promote to users at large and use.

Description

Buffer based on pressure transmitter

Technical field

This utility model is related to instrument, instrument and industrial automation, more particularly to a kind of to be based on pressure transmitter Buffer.

Background technology

PDS intelligent pressure transmitters are the pressure measuring instruments with microprocessor as core, (are expanded by gathering pressure core Scattered silicon) differential voltage signal, export corresponding two lines 4-20mA current signals.The pressure of measured medium directly acts on sensing On the diaphragm of device (rustless steel or ceramics), diaphragm is set to produce the microbit being directly proportional without cavity pressure sensor medium pressure to diffusion silicon Move, the resistance value for making sensor changes, and this change is detected with electronic circuit, and change output one corresponding to this The canonical measure signal of pressure.PDS intelligent pressure transmitters be widely used in oil, natural gas, chemical industry, metallurgy, aviation, automobile, The industrial circles such as armarium, electric power, paper pulp, papermaking, town gas, iron and steel, machinery, shipbuilding.

However, existing PDS intelligent pressure transmitters with being related to, field is more and more extensive, during actual use, Particularly steel mill's pneumatic hammer air pressure, water-flooding pump for oil field pressure measxurement, although PDS intelligent pressure transmitters possess certain pressure overload to be protected Protective function, but this pressure protecting function tool have certain limitations, when measuring in high-speed pulse air pressure or hydraulic environment, sensor Easily by impact failure cannot normal work, so as to cause PDS intelligent pressure transmitter failures.

Utility model content

The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of based on pressure transmitter Buffer, for solving prior art in pressure transmitter when measuring in high-speed pulse air pressure or hydraulic environment, sensor Easy impaired problem.

For achieving the above object and other related purposes, this utility model provides a kind of buffering based on pressure transmitter Device, including：

Flexible coupling, and it is arranged at one end inside and the pressure transmitter process adapter screw thread phase of the flexible coupling The groove matched somebody with somebody, is provided with interior hexagonal filling screw inside the other end of the flexible coupling, the interior hexagonal filling screw passes through hair Tubule component connects the bottom portion of groove.

Preferably, the cylinder of the stepped reduction of the shape of the flexible coupling.

Preferably, the seal washer of connection procedure joint is provided with around capillary module in the bottom portion of groove.

Preferably, three through holes are provided with inside the interior hexagonal filling screw edge.

Preferably, the interior hexagonal filling screw is situated between by three through holes to the connected capillary module transmission Matter.

As described above, the buffer based on pressure transmitter of the present utility model, has the advantages that：

The buffer is provided with interior hexagonal filling screw, in interior hexagonal by arranging flexible coupling inside flexible coupling Three through holes are provided with filling screw internal edge, pulse pressure when buffer medium is introduced in transmitting procedure is reached by through hole Power, when measuring in high-speed pulse air pressure or hydraulic environment so as to prevent pressure transmitter, sensor is easily impaired to ask Topic, the buffer structure is simple, is easily installed at the scene, may extend to users and uses.

Description of the drawings

Fig. 1 is shown as a kind of buffer structure schematic diagram based on pressure transmitter of this utility model offer；

Fig. 2 is shown as interior hexagonal filling screw in a kind of buffer based on pressure transmitter of this utility model offer and puts Big schematic diagram；

Fig. 3 is shown as a kind of mounting structure schematic diagram of buffer based on pressure transmitter of this utility model offer.

Component label instructions：

1 flexible coupling

2 grooves

Hexagonal filling screw in 3

4 capillary modules

5 through holes

6 pressure transmitters

7 process adapters

8 seal washers

Specific embodiment

Hereinafter embodiment of the present utility model is illustrated by particular specific embodiment, those skilled in the art can be by this Content disclosed by description understands easily other advantages of the present utility model and effect.

Refer to Fig. 1 to Fig. 3.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to Coordinate the content disclosed in description, so that those skilled in the art understands and reads, be not limited to this utility model Enforceable qualificationss, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size Adjustment, in the effect for not affecting this utility model can be generated and under the purpose to be reached, all should still fall in this utility model In the range of disclosed technology contents are obtained and can covered.Meanwhile, in this specification it is cited as " on ", D score, " left side ", The term on " right side ", " centre " and " one " etc., is merely convenient to understanding for narration, and it is enforceable to be not used to restriction this utility model Scope, being altered or modified for its relativeness is enforceable when this utility model is also considered as under without essence change technology contents Category.

Fig. 1 is referred to, for this utility model a kind of buffer structure schematic diagram based on pressure transmitter is provided, including：

Flexible coupling 1, and it is arranged at one end inside and the screw thread of 6 process adapter of pressure transmitter 7 of the flexible coupling 1 The groove 2 for matching, is provided with interior hexagonal filling screw 3 inside the other end of the flexible coupling 1, the interior hexagonal fills screw 3 connect the bottom of the groove 2 by capillary module 4.

Wherein, the buffer is direct-connected high-speed pulse pressure buffer, and the shape of the flexible coupling 1 is stepped to be subtracted Little cylinder, under the big lower end in upper end of flexible coupling 1, thereon end arrange fluted 2, groove 2 by with pressure transmitter 6 The screw thread of process adapter 7 matches and realizes connection, is provided with connection procedure around capillary module 4 in the bottom of the groove 2 and connects 7 seal washer 8, the seal washer 8 causes pressure transmitter 6 to be closely connected with buffer；The one end of capillary module 4 connects The bottom of groove 2, hexagonal filling screw 3 in other end connection.

Fig. 2 is referred to, interior hexagonal fills spiral shell in a kind of buffer based on pressure transmitter 6 provided for this utility model 3 enlarged diagrams are followed closely, wherein, three through holes 5 are provided with inside interior hexagonal filling screw 3 edge, the interior hexagonal fills spiral shell Nail 3 is by three through holes 5 to the connected transmission medium of the capillary module 4.Buffer medium is reached by three through holes 5 Pulsating pressure when introducing in transmitting procedure, so as to pressure transmitter 6 can be prevented in high-speed pulse air pressure or hydraulic environment During measurement, the easy impaired problem of sensor.

Fig. 3 is referred to, a kind of mounting structure of the buffer based on pressure transmitter 6 provided for this utility model is illustrated Figure, in the present embodiment, the lower end connection procedure joint 7 of pressure transmitter 6 is connected to the recessed of flexible coupling 1 by process adapter 7 Groove 2, is matched by seal washer 8 with process adapter 7, and the screw thread of groove 2 is mutually matched with process adapter 7 so that its connection knot Structure becomes tight, and the other end of flexible coupling 1 fills the connecting pipe of screw 3 by interior hexagonal；And work in pressure transmitter 6 When, medium fills screw 3 by three through holes 5 to the connected transmission medium of the capillary module 4 by interior hexagonal, from And directly reduce surge of the medium to sensor.

In sum, this utility model buffer is provided with interior hexagonal by arranging flexible coupling 1 inside flexible coupling 1 Filling screw 3, at the interior hexagonal filling internal edge of screw 3 three through holes 5 are provided with, and are reached buffer medium by through hole 5 and are being passed Pulsating pressure when introducing during defeated, measures so as to prevent pressure transmitter 6 in high-speed pulse air pressure or hydraulic environment When, the easy impaired problem of sensor, the buffer structure is simple, is easily installed at the scene, and may extend to users makes With.So, this utility model effectively overcomes various shortcoming of the prior art and has high industrial utilization.

Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited Type.Any person skilled in the art all can be carried out under without prejudice to spirit and the scope of the present utility model to above-described embodiment Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in this utility model All equivalent modifications completed under god and technological thought or change, should be covered by claim of the present utility model.

Claims (5)

1. a kind of buffer based on pressure transmitter, it is characterised in that include：Flexible coupling, and it is arranged at the buffering The groove that one end inside of joint matches with pressure transmitter process adapter screw thread, sets inside the other end of the flexible coupling There is interior hexagonal filling screw, the interior hexagonal filling screw connects the bottom portion of groove by capillary module.

2. the buffer based on pressure transmitter according to claim 1, it is characterised in that the shape of the flexible coupling The cylinder of stepped reduction.

3. the buffer based on pressure transmitter according to claim 1, it is characterised in that surround in the bottom portion of groove The seal washer of connection procedure joint is provided with around capillary module.

4. the buffer based on pressure transmitter according to claim 1, it is characterised in that the interior hexagonal fills screw Three through holes are provided with inside edge.

5. the buffer based on pressure transmitter according to claim 4, it is characterised in that the interior hexagonal fills screw By three through holes to the connected capillary module transmission medium.