CN216160073U

CN216160073U - Pressure transmitter

Info

Publication number: CN216160073U
Application number: CN202121806130.6U
Authority: CN
Inventors: 李松华; 黄海滨
Original assignee: Hangzhou Zhongchu Environmental Protection Technology Co ltd
Current assignee: Hangzhou Zhongchu Environmental Protection Technology Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-04-01
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses a pressure transmitter which comprises a pressure transmitter body, wherein the pressure transmitter body comprises a shell, an element core arranged in the shell, a transition connecting pipe fixed at the bottom end of the shell, a sensor arranged in the transition connecting pipe and connected with the element core through signals, and a connecting flange arranged at the end part of the transition connecting pipe far away from one end of the shell, wherein a constant temperature mechanism is arranged on the outer side wall of the transition connecting pipe, the constant temperature mechanism comprises a spiral constant temperature pipe fixedly wound on the outer side wall of the transition connecting pipe and a protective outer cover sleeved outside the constant temperature pipe, a water inlet and a water outlet are arranged on the outer side wall of the protective outer cover, two opposite ends of the constant temperature pipe are respectively communicated with the water inlet and the water outlet, and connecting mechanisms are fixedly arranged on the water inlet and the water outlet. The utility model has reasonable structural design, high measurement accuracy when being applied to high-temperature or extremely low-temperature medium measurement, and is beneficial to market popularization and application.

Description

Pressure transmitter

Technical Field

The utility model relates to the technical field of transmitters, in particular to a pressure transmitter.

Background

The pressure transmitter is a pressure sensor which takes output as a standard signal, and is an instrument which receives a pressure variable and converts the pressure variable into a standard output signal in proportion. It can convert the physical pressure parameters sensed by the detecting sensor, such as gas and liquid, into standard electric signals to be supplied to secondary instruments, such as indicating alarm, recorder and regulator, for measurement indication and process regulation.

When the pressure transmitter is used, the pressure transmitter may need to be used for measuring the pressure of a high-temperature or extremely low-temperature medium, and when the pressure transmitter is used for measuring the pressure, the deformation of a diaphragm used for measuring the pressure is influenced by the temperature when the diaphragm is in contact with the high-temperature or extremely low-temperature medium, so that the measurement accuracy is reduced, and the requirements of people cannot be met.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides the pressure transmitter which is reasonable in structural design and high in measurement accuracy when being applied to measurement of high-temperature or extremely low-temperature media.

The utility model adopts the following technical scheme:

the utility model provides a pressure transmitter, includes the pressure transmitter body, the pressure transmitter body includes the shell, set up in the inside component core of shell, be fixed in the transition connecting pipe of shell bottom, set up in the inside sensor that just is connected with component core signal of transition connecting pipe and set up in the flange that shell one end tip was kept away from to transition connecting pipe, be equipped with constant temperature mechanism on the lateral wall of transition connecting pipe, constant temperature mechanism locates the outside protective housing of constant temperature pipe including fixed spiral constant temperature pipe and the cover of locating on the transition connecting pipe lateral wall, be equipped with water inlet and delivery port on protective housing's the lateral wall, the relative both ends of constant temperature pipe communicate with water inlet and delivery port respectively, all fixed coupling mechanism that is equipped with on water inlet and the delivery port.

As a preferred technical scheme of the utility model, the connecting mechanism comprises a water pipe and a connecting sleeve rotatably sleeved on one end of the water pipe far away from the protective outer cover, a first limiting table arranged along the circumferential direction of the water pipe is arranged at one end of the outer side wall of the water pipe far away from the protective outer cover, a second limiting table arranged along the circumferential direction of the connecting sleeve is arranged at one end of the inner side wall of the connecting sleeve, which is sleeved with the water pipe, the second limiting table and the first limiting table are abutted against each other, and internal threads are further arranged on the inner side wall of the connecting sleeve.

As a preferable technical scheme of the utility model, a locking ring is clamped between the first limiting table and the second limiting table.

The utility model has the beneficial effects that:

the utility model has reasonable structural design, and the constant temperature mechanism arranged in the constant temperature mechanism can cool or heat the measured medium entering the transition connecting pipe when in use (a cooling water source is introduced into the constant temperature pipe when cooling is needed, and a hot water source is introduced into the constant temperature pipe when heating is needed), thereby effectively avoiding the problem of low detection accuracy of the sensor caused by overhigh temperature or transition of the measured medium and improving the detection accuracy of the sensor; the connection mechanism makes the connection between the water inlet and the water outlet more convenient and faster.

Drawings

FIG. 1 is a schematic structural diagram of a pressure transmitter of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

the symbols in the drawings illustrate that:

shell 1, transition connection pipe 2, flange 3, constant temperature tube 4, protection dustcoat 5, water pipe 6, adapter sleeve 7, first spacing platform 8, the spacing platform 9 of second, lock ring 10.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, a pressure transmitter includes a pressure transmitter body, where the pressure transmitter body includes a housing 1, an element core (not shown in the figure) disposed inside the housing 1, a transition connection pipe 2 fixed at the bottom end of the housing 1, a sensor (not shown in the figure) disposed inside the transition connection pipe 2 and in signal connection with the element core, and a connection flange 3 disposed at an end of the transition connection pipe 2 far from the housing 1, specifically, in this embodiment, the element core and the sensor are both conventionally used element cores and sensors in the prior art and known to those skilled in the art, and the specific structure, the working principle, and the connection mode of the element cores and the sensors are all known in the prior art, and therefore, the detailed description thereof is omitted; a constant temperature mechanism is arranged on the outer side wall of the transition connecting pipe 2, the constant temperature mechanism comprises a spiral constant temperature pipe 4 fixedly wound on the outer side wall of the transition connecting pipe 2 and a protective outer cover 5 sleeved outside the constant temperature pipe 4, a water inlet (not shown in the figure) and a water outlet (not shown in the figure) are arranged on the outer side wall of the protective outer cover 5, and specifically, in the embodiment, the water inlet is arranged at a position below the water outlet; the two opposite ends of the constant temperature pipe 4 are respectively communicated with a water inlet and a water outlet, and the water inlet and the water outlet are both fixedly provided with a connecting mechanism;

specifically, the connecting mechanism comprises a water pipe 6 fixedly communicated with the water inlet or the water outlet and a connecting sleeve 7 rotatably sleeved on one end, far away from the protective outer cover 5, of the water pipe 6 (namely, far away from the water inlet or the water outlet), specifically, one end, far away from the protective outer cover 5, of the outer side wall of the water pipe 6 is provided with a first limiting table 8 arranged along the circumferential direction of the water pipe 6, one end, sleeved with the water pipe 6, of the inner side wall of the connecting sleeve 7 is provided with a second limiting table 9 arranged along the circumferential direction of the connecting sleeve 7, the second limiting table 9 and the first limiting table 8 are abutted against each other, and the inner side wall of the connecting sleeve 9 is also provided with an internal thread;

furthermore, a locking ring 10 used for enhancing the connection tightness between the first limit table 8 and the second limit table 9 is clamped between the first limit table 8 and the second limit table 9.

When the connecting mechanism is installed, firstly, the water pipe 6 is butted with an external pipeline of a cooling water source or a hot water source, and then the connecting sleeve 7 is rotated, so that the inner side wall of the connecting sleeve 7 is screwed with the outer side wall of the external pipeline, and it is worth explaining that when the connecting mechanism is designed, the outer side wall of the butted end of the external pipeline is provided with an external thread matched with the internal thread of the inner side wall of the connecting sleeve 7.

Finally, it should be noted that: these embodiments are merely illustrative of the present invention and do not limit the scope of the present invention. In addition, other variations and modifications will be apparent to persons skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the scope of the utility model.

Claims

1. The utility model provides a pressure transmitter, includes the pressure transmitter body, the pressure transmitter body includes shell (1), sets up in the inside component core of shell (1), is fixed in transition connecting pipe (2) of shell (1) bottom, sets up in inside sensor and with component core signal connection of transition connecting pipe (2) and sets up flange (3) of keeping away from shell (1) one end tip in transition connecting pipe (2), its characterized in that: be equipped with constant temperature mechanism on the lateral wall of transition connecting pipe (2), constant temperature mechanism locates constant temperature pipe (4) outside protection dustcoat (5) including fixed spiral constant temperature pipe (4) and the cover of locating on transition connecting pipe (2) lateral wall, be equipped with water inlet and delivery port on the lateral wall of protection dustcoat (5), the relative both ends of constant temperature pipe (4) communicate with water inlet and delivery port respectively, all fix being equipped with coupling mechanism on water inlet and the delivery port.

2. A pressure transmitter as claimed in claim 1, wherein: coupling mechanism includes water pipe (6) and rotates the cover and locates adapter sleeve (7) of keeping away from protection dustcoat (5) one end on water pipe (6), the one end of keeping away from protection dustcoat (5) on the lateral wall of water pipe (6) is equipped with first spacing platform (8) that set up along the circumference direction of water pipe (6), just be equipped with second spacing platform (9) that set up along the circumference direction of adapter sleeve (7) with the one end that water pipe (6) cup jointed on the inside wall of adapter sleeve (7), second spacing platform (9) and first spacing platform (8) butt each other together, still be equipped with the internal thread on the inside wall of adapter sleeve (7).

3. A pressure transmitter as claimed in claim 2, wherein: and a locking ring (10) is clamped between the first limiting table (8) and the second limiting table (9).