CN217403685U

CN217403685U - Anti-blocking wind pressure measuring device

Info

Publication number: CN217403685U
Application number: CN202221281062.0U
Authority: CN
Inventors: 任晓辉; 胡军; 陈智宇
Original assignee: Tianjin Chenchuang Environment Engineering Science & Technology Co ltd
Current assignee: Tianjin Chenchuang Environment Engineering Science & Technology Co ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-09-09
Anticipated expiration: 2032-05-26

Abstract

The utility model relates to a technical field is measured to the wind pressure, especially relates to a prevent stifled wind pressure measuring device, measure changer and prevent stifled sampler including the wind pressure, prevent stifled sampler one end and be equipped with the air-supply line, the other end is equipped with the exhaust pipe, air-supply line and measured device intercommunication, and the exhaust pipe passes through the pressure guide pipeline intercommunication with wind pressure measurement changer pressure cell, prevents that fixed mounting has the fin of a plurality of downward slopping on the stifled sampler inner wall. The device provided by the utility model can prevent that the dust from blockking up and leading pressure pipeline and pressure transmitter pressure measurement device to guarantee that measuring accuracy is decided and stability.

Description

Anti-blocking wind pressure measuring device

Technical Field

The utility model relates to a technical field is measured to the wind pressure, especially relates to a prevent stifled wind pressure measuring device.

Background

And when the pressure measurement is carried out on a flue of the incineration system, the pressure measurement is carried out on a hearth of the waste heat boiler and a powder bin of the dust remover, a pressure transmitter is required. The smoke pressure is several hundred Pa or micro-negative pressure, the diaphragm pressure transmitter can not ensure the precision, and the pressure guide pipe type pressure measuring transmitter is usually adopted. Because the smoke at the positions contains a large amount of dust, the dust can enter a pressure measuring device of the pressure transmitter through the pressure guide pipe in the process of measuring the pressure, and the dust can be accumulated in the pressure guide pipe and the pressure measuring device of the transmitter after long-time measurement, so that the measurement is inaccurate or impossible. Meanwhile, due to dust accumulation, the smoke pressure in the pressure guide pipe is unstable, and the measurement result can jump unstably.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a prevent that the dust from blockking up pressure pipe and pressure transmitter pressure measurement device to guarantee that measuring accurate is confirmed and stable one kind prevents stifled wind pressure measuring device.

The utility model discloses a realize through following technical scheme:

the utility model provides a prevent stifled wind pressure measuring device, its includes that the wind pressure measures the changer and prevents stifled sampler, prevent stifled sampler one end and be equipped with the air-supply line, the other end is equipped with the exhaust pipe, air-supply line and device under test intercommunication, the exhaust pipe is measured changer load cell with the wind pressure and is passed through the pressure guide pipeline intercommunication, prevents that fixed mounting has the fin of a plurality of downward slopping on the stifled sampler inner wall.

Preferably, the fins are elastic fins, the top of the anti-blocking sampler is provided with a rotary cover, and an exhaust pipe quick connector is inserted on the rotary cover.

Optimally, the wind pressure measuring transmitter is positioned above the anti-blocking sampler.

Furthermore, a sampling branch pipe is arranged on the device to be tested, and an air inlet pipe of the anti-blocking sampler is fixedly connected with the sampling branch pipe through a flange.

Optimally, the pressure guide pipeline is connected with the pressure measuring element of the wind pressure measuring transmitter and the anti-blocking sampler exhaust pipe through butt welding type straight-through welding terminal joints.

Furthermore, a purging pipe joint is arranged on the exhaust pipe quick joint and is communicated with purging equipment through a purging pipe.

Preferably, the pressure guide pipeline is provided with a pressure guide stop valve, and the purging pipe is provided with a purging stop valve.

The beneficial effects of the utility model

The utility model provides a pair of prevent stifled wind pressure measuring device has following advantage: an anti-blocking sampler is additionally arranged between a device or a device to be measured and a pressure transmitter, a plurality of fins which are inclined downwards are arranged in the anti-blocking sampler, so that flue gas forms rotational flow in the anti-blocking sampler, the flue gas is stably discharged outwards, the accuracy of a measurement result is ensured, dust in the flue gas can be accumulated on the fins and can slide downwards along the fins into the device to be measured, and the dust in the flue gas is prevented from being accumulated in a pressure guide pipe and a pressure measuring device of the pressure transmitter, so that the air pressure is unstable and the measurement result is inaccurate; and the device has low energy consumption and low manufacturing and maintenance cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure, 1, an air inlet pipe, 2, an anti-blocking sampler, 3, an exhaust pipe, 4, a purging pipe joint, 5, a pressure guide pipeline, 6, a pressure guide stop valve, 7, a butt welding type direct welding terminal joint, 8, a sampling branch pipe, 9, a tested device, 10, a wind pressure measuring transmitter, 11, a purging stop valve, 12, a flange, 13, a rotary cover and 14, fins are arranged.

Detailed Description

The utility model provides an prevent stifled wind pressure measuring device, its includes wind pressure measuring transducer 10 and prevents stifled sampler 2, prevent stifled sampler one end and be equipped with air-supply line 1, the other end is equipped with exhaust pipe 3, air-supply line and the 9 intercommunications of device under test, the exhaust pipe passes through pressure guide pipeline 5 intercommunications with wind pressure measuring transducer pressure cell, prevents that fixed mounting has the fin 14 of a plurality of downward slopings on the stifled sampler inner wall. The pressure guide pipeline can be a steel structure pipeline, and has certain pressure resistance and good corrosion resistance.

When the pressure of flue gas media of equipment containing dust, such as a flue of an incineration system, a waste heat boiler hearth, a dust remover powder bin and the like, is measured, an anti-blocking sampler is additionally arranged between the sampling point and the wind pressure measuring transmitter. The anti-blocking sampler is connected with a flange on the outer wall of the pipeline or equipment or welded. The flue gas is earlier through preventing stifled sampler, and the fin through a plurality of downward sloping filters the dust to along the fin landing to being surveyed in the device downwards, make the flue gas through preventing stifled sampler after, the dust volume obviously descends or does not contain the dust, the dust can not lead the pressure pipeline to block up like this, also can not be at pressure transmitter pressure measurement part gathering, thereby guarantee measurement effect and measurement accuracy. Meanwhile, the anti-blocking sampler can also play a role in damping unstable wind pressure, improve the measurement effect and avoid instable instrument display caused by unstable wind pressure.

Preferably, the fins are elastic fins, the top of the anti-blocking sampler is provided with a rotary cover 13, and an exhaust pipe quick connector is inserted on the rotary cover. The elastic fin can be made of steel structure materials, and also can be made of other high-temperature-resistant anticorrosive materials, when dust accumulated on the elastic fin is more and cannot naturally slide off, the exhaust pipe quick connector can be pulled out, then the screw cap is opened, the elastic fin is vibrated by using the vibrating rod, and the dust accumulated on the elastic fin is shaken off. The operation is simple and convenient, the cost is low, and extra energy consumption is not needed.

Optimized, the wind pressure is measured the changer and is located the top of preventing stifled sampler for the mounted position of wind pressure measurement changer is higher than the pressure point of getting, further prevents that the dust from entering into the wind pressure along pressure guide pipeline and measure the changer in with load cell direct contact, the dust gathers on load cell, lead to load cell to make the measurement inaccurate to the pressure variation sensitivity decline, prevent that the setting of stifled sampler not only obviously prolongs wind pressure measurement changer life, can guarantee the measuring accuracy moreover.

Furthermore, be equipped with sample branch pipe 8 on the device under test, prevent stifled sampler's air-supply line and sample branch pipe between through flange 12 fixed connection, convenient the maintenance, also can adopt direct welded fixed mode.

Preferably, the pressure guide pipeline is connected with the pressure measuring element of the wind pressure measuring transmitter and the exhaust pipe of the anti-blocking sampler through butt welding type direct welding terminal joints 7, and the installation is convenient.

Further, be equipped with purge tube joint 4 on the exhaust pipe quick-operation joint, purge tube joint is through purging the pipe and purging the equipment intercommunication, is equipped with purge tube joint on exhaust pipe quick-operation joint, and purge tube joint is through purging the pipe and purging the equipment intercommunication, and when the dust of gathering in preventing stifled sampler was more, also can open purge equipment, sweeps in preventing stifled sampler, prevents to influence the result of use and the measurement accuracy of wind pressure measurement transmitter of preventing stifled sampler.

Furthermore, install on the pressure guide pipeline and lead pressure stop valve 6, install on the purge tube and sweep stop valve 11, be convenient for when measuring, will sweep the pipe and close, will lead when sweeping and press the pipeline to close.

To sum up, the utility model provides a pair of prevent stifled wind pressure measuring device prevents that the dust from blockking up pressure pipe way and pressure transmitter pressure measurement device to guarantee that measuring accuracy is decided and stability.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an anti-blocking wind pressure measuring device which characterized in that: including the wind pressure measurement changer and prevent stifled sampler, prevent stifled sampler one end and be equipped with the air-supply line, the other end is equipped with the exhaust pipe, the air-supply line communicates with the device under test, the exhaust pipe is measured changer load cell with the wind pressure and is passed through the pressure pipeline intercommunication of leading, prevents that fixed mounting has the fin of a plurality of downward slopping on the stifled sampler inner wall.

2. The anti-blocking wind pressure measuring device according to claim 1, wherein the plurality of fins are elastic fins, a screw cap is installed on the top of the anti-blocking sampler, and an exhaust pipe quick connector is inserted on the screw cap.

3. The anti-blocking wind pressure measuring device according to claim 1, wherein the wind pressure measuring transmitter is located above the anti-blocking sampler.

4. The anti-blocking wind pressure measuring device according to claim 1, wherein a sampling branch pipe is provided on the device to be measured, and an air inlet pipe of the anti-blocking sampler is fixedly connected with the sampling branch pipe through a flange.

5. The anti-blocking wind pressure measuring device according to claim 1, wherein the pressure guiding pipe is connected to the pressure measuring transducer load cell and the anti-blocking sampler exhaust pipe by butt welding type through welding terminal joints.

6. The anti-blocking wind pressure measuring device according to claim 2, wherein the exhaust pipe quick coupling is provided with a purging pipe joint, and the purging pipe joint is communicated with a purging device through a purging pipe.

7. The anti-blocking wind pressure measuring device according to claim 6, wherein the pressure guide pipeline is provided with a pressure guide stop valve, and the purging pipe is provided with a purging stop valve.