CN217237377U

CN217237377U - Novel flue gas sampling probe rod

Info

Publication number: CN217237377U
Application number: CN202220582106.7U
Authority: CN
Inventors: 唐武; 牛辉; 刘永华; 李雅
Original assignee: Xingtai Guotai Power Generation Co ltd
Current assignee: Xingtai Guotai Power Generation Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-08-19
Anticipated expiration: 2032-03-17

Abstract

The utility model relates to the technical field of probe rods, in particular to a novel flue gas sampling probe rod; because the utility model discloses designed water retaining device and protection component on body of rod upper portion, consequently can avoid the water in the flue gas to get into inside the body of rod and avoided the flue gas to the erosion of the body of rod, prolonged the life of the body of rod, solved flue gas and wherein water and held the problem of the probe rod that easily corrodes.

Description

Novel flue gas sampling probe rod

Technical Field

The utility model relates to a probe rod technical field especially relates to a novel flue gas sampling probe rod.

Background

In the prior art, the American thermoelectric flue gas CEMS is currently used as one of main stream flue gas continuous online detection devices and is widely applied to various industrial enterprises, parameters such as SO2, NOX and humidity are used as important environmental protection data and are directly related to benefits and social influences of the enterprises, and therefore the measurement stability and accuracy of the instrument are guaranteed to be of great importance. The sampling probe rod is used in a flue which has high humidity and contains acidic gas for a long time as a main link of flue gas pretreatment, the problems caused by corrosion and water vapor influence become common faults of the equipment, a plurality of using units known at present have similar faults, and the problem becomes the hidden danger influencing the stability and the accuracy of the equipment with the highest frequency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that flue gas and water therein are easy to corrode the feeler lever.

In order to solve the technical problem, the utility model provides an including the body of rod, the one end on body of rod upper portion is provided with the ring flange that is used for connecting check out test set, its characterized in that: the other end on body of rod upper portion is provided with the manger plate device that is used for blockking the aqueous water of flue gas, body of rod upper portion is provided with the protection subassembly that is used for protecting the body of rod.

Because the utility model discloses designed water retaining device and protection component on body of rod upper portion, consequently can avoid the water in the flue gas to get into inside the body of rod and avoided the flue gas to the erosion of the body of rod, prolonged the life of the body of rod, solved flue gas and wherein water and held the problem of the probe rod that easily corrodes.

Drawings

Fig. 1 is a perspective view of the overall structure of a novel smoke sampling probe rod.

Fig. 2 is a schematic side view of the overall structure of a novel smoke sampling probe rod.

In the figure: 1. a rod body; 2. a flange plate; 3. a water retaining device; 4. and protecting the component.

Detailed Description

The utility model relates to a novel flue gas sampling probe rod, as shown in fig. 1-2 this probe rod is including the body of rod 1 that is used for flue gas preliminary treatment, the one end on 1 upper portion of the body of rod is provided with the ring flange 2 that is used for connecting check out test set, the other end on 1 upper portion of the body of rod is provided with the manger plate device 3 that is used for blockking the flue gas normal water, 1 upper portion of the body of rod is provided with the protection subassembly 4 that is used for protecting body of rod 1.

As shown in fig. 1-2, the surface of the flange 2 has an inclination angle of 5 ° to the inside of the flue in the rod body 1.

As shown in fig. 1-2, the water retaining device 3 is sleeved on the upper portion of the rod body 1 and fixed by bolts, and the diameter of the water retaining device 3 is larger than that of the rod body 1.

As shown in fig. 1-2, the protection component 4 is a sleeve made of teflon or a corrosion-resistant thermoplastic material.

When a user uses the probe rod manufactured by the utility model, the existing probe rod is seriously corroded, and the service life is greatly shortened; the service life is more than two years, and in practice, faults begin to occur about one year, the price of the probe rod is over ten thousand yuan, a large amount of water vapor and water drops in flue gas with high maintenance cost take away a large amount of heat from the outer wall of the probe rod, SO that the heating temperature of the front end is insufficient when part of the flue gas is special, the influence is more obvious under some special working conditions (such as washing of a wet electric dust collector), and the measurement of SO2 and humidity parameters is possibly inaccurate directly;

in view of the defects, the national tai thermal control division tries to tailor a protective sleeve for the probe rod through data inquiry and field experiments, so that the sleeve plays a role in protecting the probe rod on one hand, the direct erosion corrosion of the probe rod by smoke is avoided, and the sleeve has a heat preservation function on the other hand, the heat taken away by water vapor and water drops in the smoke is reduced, and the temperature stability of the whole probe rod, particularly the front end is ensured; the probe rod is set to be 140-180 ℃, the local highest temperature of the outer wall of the probe rod is about 200 ℃, so the material is required to be at least capable of tolerating 250 ℃ of the tolerant temperature, meanwhile, the thickness of the flange plate 2 and the size of the mounting sampling hole are required to be less than 3mm, and the polytetrafluoroethylene tube or the corrosion-resistant thermoplastic tube is determined to be selected and mounted on the outer wall of the probe rod through repeated tests;

in order to further improve the reliability of the probe rod, the former obsolete probe rod is analyzed by the national tai thermal control division field, and the condition that water in the flue gas flows into the front end along the probe rod and then is sucked into the probe rod in the operation process is preliminarily judged. In order to verify the situation, a plurality of steel belts are temporarily additionally arranged on the probe rod in different fields, marks are made, the steel belts are taken out after the operation for one month, the trend of the water track is observed, and the previous judgment is confirmed. Therefore, the water retaining device 3 is designed at the front end of the probe rod aiming at the condition, water is effectively prevented from flowing into the probe rod, meanwhile, the flange plate 2 of the probe rod is improved in installation angle and determined to be inclined by 5 degrees in the flue, so that the measurement sampling is not influenced, and the influence of water vapor can be reduced.

According to the scheme of designing and additionally installing the protection component 4 and the water retaining device 3 in the national tai thermal control division field, the self-development achievement is obtained based on years of field maintenance experience and a large number of test attempts, and from the current result, the first-batch improved probe rod is used for two years, is still intact and stable in operation performance during disassembly and inspection in overhaul, and has no fault caused by corrosion and water vapor factors within two years. The scheme solves the hidden trouble of the highest failure rate in the original design of the American thermoelectric flue gas CEMS at present.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides a novel flue gas sampling probe rod, includes the body of rod (1), the one end on body of rod (1) upper portion is provided with ring flange (2) that are used for connecting check out test set, its characterized in that: the water-retaining device is characterized in that the other end of the upper portion of the rod body (1) is provided with a water-retaining device (3) used for blocking water in flue gas, and the upper portion of the rod body (1) is provided with a protection assembly (4) used for protecting the rod body (1).

2. The novel flue gas sampling probe rod of claim 1, which is characterized in that: the surface of the flange plate (2) is provided with an inclination angle which is 5 degrees towards the inner part of the flue of the rod body (1).

3. The novel smoke sampling probe rod of claim 1, which is characterized in that: the water retaining device (3) is sleeved on the upper portion of the rod body (1) and fixed through a bolt, and the diameter of the water retaining device (3) is larger than that of the rod body (1).

4. The novel smoke sampling probe rod of claim 1, which is characterized in that: the protection component (4) is a sleeve, and the sleeve is made of polytetrafluoroethylene or corrosion-resistant thermoplastic material.