CN210198810U - Steam sampling separator under supercritical state for boiler - Google Patents

Abstract

The utility model relates to a steam sample separator under supercritical state for boiler, its characterized in that: the sampling separator comprises a shell, a first flat end cover and a second flat end cover, wherein the first flat end cover and the second flat end cover are respectively arranged at two ends of the shell, the first flat end cover is provided with a central through hole used for enabling one end of a gas-liquid separation pipe to extend into an inner cavity of the shell, the second flat end cover is provided with a central through hole used for enabling one end of a medium conveying pipe to extend into the inner cavity of the shell, two through holes are respectively formed in two ends of the bottom of the shell, one end of the first flat end cover is provided with a through hole communicated with the sampling pipe, the integral through hole is inclined towards one side of the first flat end cover by 5-45 degrees after being communicated with the sampling pipe, one end of the second flat end cover is provided with a. The utility model discloses the assembly is simple, uses safe and reliable, and the separation effect is good.

Description

Steam sampling separator under supercritical state for boiler

Technical Field

The utility model relates to a sampling device especially discloses a steam sample separator under supercritical state for boiler for the boiler is carrying out the analysis of taking a sample to boiler outlet steam under with water heating to supercritical state.

Background

After the water is heated to 100 ℃, the water is not completely changed from a liquid state to a gas state, the gas state percentage is increased and the liquid state percentage is reduced along with continuous heating, a process is needed, when the temperature and the pressure of the water are raised to be above a critical point (Tc =374.3 ℃ and Pc =22.1 MPa) by a boiler, namely, the water enters a supercritical state, the property of the water is greatly changed, and the density, the dielectric constant, the viscosity, the diffusion coefficient, the thermal conductivity, the solubility and the like of the water are different from those of common water and steam, so that the phase state (gas phase or liquid phase) of the water cannot be distinguished. In order to know the phase state of the current measured object, the prior art can only judge whether the current temperature and pressure meet the working condition requirements through a thermometer and a pressure gauge, but the composition percentage of steam needs to be known through sampling analysis. The structure of the sampling device applied to boiler steam at present is generally complex, and the corresponding processing and manufacturing cost is higher.

Disclosure of Invention

The utility model aims at solving the defect of prior art, design a steam sample separator under the supercritical state for the boiler, realize carrying out gas-liquid separation's sample analysis to the steam under the supercritical state of boiler export.

The utility model discloses a realize like this: a steam sampling separator under supercritical state for boiler, which is characterized in that: the sampling separator comprises a shell, a first flat end cover and a second flat end cover which are respectively arranged at the two ends of the shell, the first flat end cover is provided with a central through hole for extending one end of the gas-liquid separation pipe into the inner cavity of the shell, the second flat end cover is provided with a central through hole for extending one end of the medium conveying pipe into the inner cavity of the shell, two through holes are respectively arranged at two ends of the bottom of the shell, one end of the first flat end cover is provided with a through hole communicated with the sampling tube, the shape of the integral through hole after being communicated with the sampling tube is 5-45 degrees inclined to one side of the first flat end cover, one end of the second flat end cover is provided with a through hole communicated with the bypass tube, the whole through hole is shaped vertically downwards after being communicated with the bypass pipe, the steam of the sample to be sampled is sent into the inner cavity of the sampling separator through the medium conveying pipe and is precipitated at the lower part of the shell, then flows out through the sampling pipe, and the sampled steam is output through the gas-liquid separation pipe.

The length of the gas-liquid separation pipe extending into the inner cavity of the shell is 200cm, one end of the gas-liquid separation pipe extending into the inner cavity of the shell is sealed by welding a sealing plate, small through holes are uniformly distributed in the pipe body of the gas-liquid separation pipe in the distance section from the end part of the pipe body to the through hole communicated with the sampling pipe on the shell, 8-20 small through holes are formed in the pipe body, the diameter of each small through hole is 1/5 of the outer diameter of the gas-liquid separation pipe, the length of the medium conveying pipe extending into the inner cavity of the shell is 200cm, and the extending distance is larger than the distance from the through hole communicated with the bypass pipe and formed in the shell to the outer surface. The number of the small through holes is preferably 12, the small through holes are arranged at one side port close to the sealing plate in a 4 x 3 sequence, 4 small through holes are uniformly distributed on the circumference of the gas-liquid separation tube body in a single circle, 3 circles are arranged, and the distance between the small through holes in adjacent circles is 25 cm.

The shell is a high-pressure alloy pipe, the first flat end cover and the second flat end cover are both made of alloy steel forgings and are respectively welded at two ends of the shell, and the sampling pipe and the bypass pipe are respectively and fixedly connected with the shell in a welding mode.

The bypass pipe is used as a branch cylinder and guides part of steam generated by the boiler out for other purposes.

The utility model has the advantages that: the utility model discloses to the medium sample of boiler export under the supercritical state, whole, simple manufacture, safe and reliable, the separation effect is showing, can extensively utilize in the boiler system that needs supercritical state work.

Drawings

Fig. 1 is a schematic sectional structure diagram of the present invention.

In the figure: 1. a housing; 2. A first flat end cap; 3. A second flat end cap; 4. A gas-liquid separation pipe; 5. A medium delivery pipe; 6. a sampling tube; 7. A bypass tube.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

According to the attached drawing 1, the utility model relates to a steam sample separator under supercritical state for boiler, locate first flat end cover 2 and the flat end cover 3 of second at casing 1 both ends including casing 1, branch, first flat end cover 2 be equipped with and be used for stretching into the central through-hole of 1 inner chamber of casing with the one end of gas-liquid separation pipe 4, the flat end cover 3 of second be equipped with and be used for stretching into the central through-hole of 1 inner chamber of casing with the one end of medium conveyer pipe 5. Two through holes are respectively formed in two ends of the bottom of the shell 1, a through hole communicated with the sampling tube 6 is formed in one end of the first flat end cover 2, the integral through hole is inclined towards one side of the first flat end cover 2 by 5-45 degrees after being communicated with the sampling tube 6, a through hole communicated with the bypass tube 7 is formed in one end of the second flat end cover 3, and the integral through hole is vertically downward after being communicated with the bypass tube 7.

The shell 1 is a high-pressure alloy pipe. Under the conditions of high pressure and high temperature, the allowable stress of the material meets the requirement of strength calculation, and the carbon steel material cannot be qualified under the condition, so the first flat end cover 2 and the second flat end cover 3 are both alloy steel forgings and are respectively welded at the two ends of the shell 1. The sampling tube 6 and the bypass tube 7 are respectively fixedly connected with the shell 1 in a welding mode. The length that gas-liquid separation pipe 4 stretched into 1 inner chamber of casing is 200cm, and the one end that stretches into 1 inner chamber of casing adopts the shrouding welding to seal, and play on casing 1 at this tip and set up little through-hole with the body equipartition of gas-liquid separation pipe 4 in the through-hole of sampling tube 6 intercommunication apart from the section, little through-hole is equipped with 8 ~ 20, preferably set up 12, and play according to 4 x 3 order with nearly shrouding one side port department, the single circle sets up 4 with 4 body circumference equipartitions of gas-liquid separation pipe promptly, set up 3 circles altogether, the little through-hole interval of adjacent circle is 25cm, the diameter of every little through-hole is 1/5 of 4 external diameters of gas-liquid separation pipe. The length of the medium conveying pipe 5 extending into the inner cavity of the shell 1 is 200cm, and the extending distance is larger than the distance from a through hole formed in the shell 1 and communicated with the bypass pipe 7 to the outer surface of the second flat end cover 3.

During the use, boiler outlet steam gets into whole sample separator from top to bottom, and gas-liquid separation pipe 4's effect is the steam of extraction through medium conveyer pipe 5 transport advance sample separator, lets the sample steam of waiting to take a sample deposit in the lower part, and the way sampling tube 6 flows out, and the steam after the sample is then exported by gas-liquid separation pipe 4. The bypass pipe 7 is used for guiding a part of steam generated by the boiler to be used for other purposes and plays a role of a steam distributing cylinder.

The utility model discloses the assembly is simple, uses safe and reliable, and separation effect is good, can use under the supercritical state (Tc =374.3 ℃, Pc =22.1MPa more promptly), thereby the perfect condition that the sample effect that the gas-liquid is double-phase to be difficult to distinguish and leads to under solving the supercritical state is unsatisfactory.

Claims (5)

1. A steam sampling separator under supercritical state for boiler, which is characterized in that: the sampling separator comprises a shell, a first flat end cover and a second flat end cover which are respectively arranged at the two ends of the shell, the first flat end cover is provided with a central through hole for extending one end of the gas-liquid separation pipe into the inner cavity of the shell, the second flat end cover is provided with a central through hole for extending one end of the medium conveying pipe into the inner cavity of the shell, two through holes are respectively arranged at two ends of the bottom of the shell, one end of the first flat end cover is provided with a through hole communicated with the sampling tube, the shape of the integral through hole after being communicated with the sampling tube is 5-45 degrees inclined to one side of the first flat end cover, one end of the second flat end cover is provided with a through hole communicated with the bypass tube, the whole through hole is shaped vertically downwards after being communicated with the bypass pipe, the steam of the sample to be sampled is sent into the inner cavity of the sampling separator through the medium conveying pipe and is precipitated at the lower part of the shell, then flows out through the sampling pipe, and the sampled steam is output through the gas-liquid separation pipe.

2. The supercritical steam sampling separator for a boiler according to claim 1, wherein: the length of the gas-liquid separation pipe extending into the inner cavity of the shell is 200cm, one end of the gas-liquid separation pipe extending into the inner cavity of the shell is sealed by welding a sealing plate, small through holes are uniformly distributed in the pipe body of the gas-liquid separation pipe in the distance section from the end part of the pipe body to the through hole communicated with the sampling pipe on the shell, 8-20 small through holes are formed in the pipe body, the diameter of each small through hole is 1/5 of the outer diameter of the gas-liquid separation pipe, the length of the medium conveying pipe extending into the inner cavity of the shell is 200cm, and the extending distance is larger than the distance from the through hole communicated with the bypass pipe and formed in the shell to the outer surface.

3. The supercritical steam sampling separator for a boiler according to claim 1, wherein: the shell is a high-pressure alloy pipe, the first flat end cover and the second flat end cover are both made of alloy steel forgings and are respectively welded at two ends of the shell, and the sampling pipe and the bypass pipe are respectively and fixedly connected with the shell in a welding mode.

4. The supercritical steam sampling separator for a boiler according to claim 1, wherein: the bypass pipe is used as a steam distributing cylinder for leading out part of steam.

5. The supercritical steam sampling separator for a boiler according to claim 2, wherein: the number of the small through holes is 12, the small through holes are arranged at one side port close to the sealing plate and are arranged in a 4 multiplied by 3 sequence, 4 small through holes are uniformly distributed on the circumference of the gas-liquid separation tube body in a single circle, 3 circles are arranged in total, and the distance between the small through holes of adjacent circles is 25 cm.

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