CN205722823U - A kind of particle remover with supercritical carbon dioxide as working medium - Google Patents

Abstract

The utility model discloses a kind of particle remover with supercritical carbon dioxide as working medium, it includes conduit entrance (1), duct wall (2), coagulation district (3), particulate collection zone (4) and pipe outlet (5), wherein, conduit entrance (1) place is provided with electric charge net (11), the outside of duct wall (2) is provided with thermophoresis coating (6), for producing thermophoretic effect, so can effectively prevent little particle from sticking to inside the tube wall of particle remover.Particle remover simple in construction provided by the utility model, the small particle less than 2.5 μm for the particle diameter can be removed, and the particle remover heart in the duct provided by the utility model carries out powder collection, effectively prevent the problem that fine particle thing sticks to inner-walls of duct.

Description

A kind of particle remover with supercritical carbon dioxide as working medium

Technical field

The utility model relates to nuclear energy field, particularly relates to the particulate matter removing device in nuclear energy field, especially, relates to A kind of particulate matter removing device with supercritical carbon dioxide as working medium.

Background technology

Use supercritical carbon dioxide as the working medium of forth generation HTGR, be possible not only to avoid critical heat flux density Thermal technology's security restriction, but also can easily promote core exit temperature, simplify the advantage such as reactor core system architecture.

Supercritical CO 2 medium is owing to its viscosity is liquid 1%, and diffusion coefficient is liquid 100 times, than liquid more The speed of fast dissolving solute, the solvability of the solute bigger than gas, improve the solubility property of fine particle thing, make Grain thing is dispersed into less particulate matter in supercritical CO 2 medium.And the fuel element major part of HTGR be by Full ceramic mould coated particle disperse is made in graphite nodule matrix, although overwhelming majority fission product can be stopped by this material In the ceramic SiC layer of complete coated particle, but still also have some tiny impurity presented in particulate matter.This Tiny a bit particulate matter (as graphite dust produces particulate matter) usually has radioactive particle, and these particles can cause and one are Row problem, affects the heat transfer property of cooling agent, occurs that localized heat transfer deteriorates, affects the service life of pipeline, affects reactor Properly functioning and safety, the even more serious life and health that also can threaten staff around nuclear power station.

At present, domestic and international major part is conventional high-performance cleaner, common are electric cleaner, bag dust collector, electrostatic Granulosa deduster, electrostatic cyclone, electric-bag complex dust collector etc., these dedusters, 10 μm are more than for particle diameter Particulate matter efficiency of dust collection is high, but substantially reduces for fine particle (diameter ＜ 2.5 μm) efficiency of dust collection.These dedusters are most It is to utilize single principle to carry out dedusting, DeGrain to particulate matter.Although also there being expert to utilize electricity coagulating technique and electrostatic Deduster combines, but its device is difficult to solve the problem that some fine particle things are pasted onto inner-walls of duct, if this problem Occur in reactor, then very big inconvenience will be brought to reactor operation.

Utility model content

In order to overcome the problems referred to above, present inventor has performed and study with keen determination, designing one with supercritical carbon dioxide is The particle remover of working medium, described particle remover is by thermophoretic effect and coagulation and combines, and can effectively remove particulate matter, and not Particulate matter can be caused to stick on tube wall, thus complete the utility model.

On the one hand the utility model provides a kind of particle remover with supercritical carbon dioxide as working medium, specifically embodies In the following areas:

(1) a kind of particle remover with supercritical carbon dioxide as working medium, described particle remover is circular cylindrical pipe Structure, it is characterised in that described particle remover includes conduit entrance the 1st, duct wall the 2nd, coagulation district's the 3rd, particulate collection zone 4 and pipe Road outlet 5, wherein,

It is provided with electric charge net 11 at conduit entrance 1,

The outside of duct wall 2 is provided with thermophoresis coating 6；

(2) particle remover according to above-mentioned (1), wherein, described electric charge net 11 is intersected structure by electric charge twine 111 Become；

(3) particle remover according to above-mentioned (2), wherein,

Described electric charge twine 111 is manganin silk, and/or

The neighbouring spacing between electric charge twine 111 is 0.5～2.5mm；

(4) according to above-mentioned (1) to the particle remover described in one of (3), wherein, the 61st, described thermophoresis coating 6 includes conductor Coil 62 and insulation material 63, wherein, described coil 62 is wound on conductor 61, and described insulation material 63 is wrapped in and is tied with coil Outside the conductor of 62；

(5) particle remover according to above-mentioned (4), wherein,

Described coil 62 is cast iron aluminium nickel cobalt material, and/or

Described coil 62 is connected with alternating current, and/or

Described insulation material 63 is mica material；

(6) particle remover according to above-mentioned (4) or (5), wherein, the thickness of described thermophoresis coating 6 is 20～ 30mm, wherein, the thickness of conductor 61 is 16～28mm, and the thickness of coil 62 and insulation material 63 is respectively 1～2mm, wherein, base It is 120～150mm in the internal diameter of the pipeline of particle remover；

(7) according to above-mentioned (1) to the particle remover described in one of (6), wherein, coagulation district 3 are provided with alternating current Device 31 and coagulation device 32；

(8) particle remover according to above-mentioned (1), wherein,

Described AC electrical device 31 is annular, is close to the inner side of duct wall 2, and/or

Described coagulation device 32 are arranged at the center of pipeline, and for being vertically arranged；

(9) particle remover according to above-mentioned (1), wherein, described particulate collection zone 4 includes that particle sinks adsorption device 41 With particle collection device 42, wherein, described particle sinks adsorption device 41 for being vertically arranged, parallel with coagulation device 32；Particle is received Acquisition means 42 is arranged at particle and sinks on adsorption device 41, and to sink adsorption device 41 vertical with particle；

(10) particle remover according to above-mentioned (9), wherein, the height of described particle collection device 42 is 20～ 30mm, preferably 22～28mm, more preferably 25mm, wherein, be 120～150mm based on the internal diameter of the pipeline of particle remover.

Brief description

Fig. 1 illustrates the overall structure schematic diagram of the particle remover with supercritical carbon dioxide as working medium；

Fig. 2 illustrates the axial cross-sectional view in Fig. 1 at A-A；

Fig. 3 illustrates the structural representation of electric charge net；

Fig. 4 illustrates the axial longitudinal section in Fig. 1 at B-B；

Fig. 5 illustrates the longitudinal section view in Fig. 4 at D-D；

Fig. 6 illustrates the partial enlarged drawing in Fig. 4 at c；

Fig. 7 illustrates the particle remover with supercritical carbon dioxide as working medium at the installation diagram within HTGR；

Fig. 8 illustrates the particle remover with supercritical carbon dioxide as working medium at the installation diagram outside HTGR.

Drawing reference numeral illustrates:

1-conduit entrance

11-electric charge net

111-electric charge twine

2-pipeline outer wall

3-coagulation district

31-AC electrical device

32-coagulation device

4-particulate collection zone

41-particle deposition apparatus

42-particle collection device

5-pipe outlet

6-thermophoresis coating

61-conductor

62-coil

63-insulation material

7-(with supercritical carbon dioxide as working medium) particle remover

8-HTGR

81-heap body

82-steam generator

83-generator

84-steam turbine

85-regenerator

86-cooler

87-compressor

Detailed description of the invention

Below by accompanying drawing, the utility model is further described.By these explanations, feature of the present utility model To become more apparent from clearly with advantage.

Wherein, although the various aspects of embodiment shown in the drawings, but unless otherwise indicated, it is not necessary in proportion Draw accompanying drawing.

The utility model provides a kind of particle remover with supercritical carbon dioxide as working medium, as it is shown in figure 1, described Particle remover is circular cylindrical pipe structure, and it includes conduit entrance the 1st, pipeline outer wall the 2nd, coagulation district the 3rd, particulate collection zone 4 and Pipe outlet 5.Wherein, little particle carries out coalescence effect in coagulation district 3, gradually assembles and forms bulky grain thing, then by particle Bulky grain is collected by collecting region 4.

According to the utility model one preferred embodiment, as in figure 2 it is shown, be provided with electric charge net at conduit entrance 1 11。

In further preferred embodiment, constitute as it is shown on figure 3, described electric charge net 11 is intersected by electric charge twine 111.

Wherein, can be through electric charge net 11 when little particle enters particle remover from conduit entrance 1, electric charge net 11 can make Little particle carries Partial charge before entering coagulation district, increases the quantity of electric charge before little particle enters coagulation district, little to improve The coagulation of particle effect.

According to the utility model one preferred embodiment, described electric charge twine 111 is manganin silk.

In further preferred embodiment, the spacing of neighbouring electric charge twine 111 is 0.5～2.5mm, preferably 1 ～2mm, more preferably 1.5mm.

Wherein, manganin silk has good electric conductivity, effectively can provide electric charge for little particle.

According to the utility model one preferred embodiment, as in figure 2 it is shown, be provided with heat in the outside of pipeline outer wall 2 Swimming coating 6.

In further preferred embodiment, as shown in Figure 2 and Figure 6, described thermophoresis coating 6 includes conductor the 61st, coil 62 and insulation material 63.

Wherein, described coil 62 is wound on conductor 61, and described insulation material 63 is wrapped in outside the conductor being tied with coil 62 Side.

In embodiment still more preferably, described coil 62 is cast iron aluminium nickel cobalt material, on described coil 62 Being connected with alternating current, described insulation material 63 is mica material.

Wherein, the purpose of thermophoresis coating is for producing thermophoretic effect, coil 62 is connected with alternating current for producing whirlpool Stream.Specifically: on coil, be passed through alternating current, coil will produce alternating magnetic field, then, the conductor in the middle of coil is at circumference Direction equivalence can become a Guan Bi circuit enclosing, and the magnetic flux in Guan Bi circuit is constantly changing, therefore, at conductor circle Circumferential direction can produce induced electromotive force and induced-current, and sense of current is turn-taked along the circumferencial direction of conductor, just as a circle circle Whirlpool, referred to as eddy current, wherein, eddy current is caused by induced electromotive force, and eddy current is the same with general electric current, can produce thermal effect Answer, and how many heat production meets Joule's law.

Therefore, under eddy current effect so that pipeline outer wall temperature is higher than pipeline center, produce thermograde, make little particle Produce the movement velocity contrary with thermograde, i.e. move to pipeline center, form thermophoretic effect.

According to the utility model one preferred embodiment in, the thickness of described thermophoresis coating 6 is 20～30mm.

In further preferred embodiment, in thermophoresis coating 6, the thickness of conductor 61 is 16～28mm, coil 62 It is respectively 1～2mm with the thickness of insulation material 63.

Wherein, above-mentioned gauge be the internal diameter of the pipeline based on particle remover be 120～150mm.If particle remover Internal diameter of the pipeline increase or reduce, then above-mentioned gauge also carries out increasing or reducing in proportion.Wherein, the mesh of insulation material Be to dissipate outside the heat preventing thermophoresis coating, thus cause thermophoresis efficiency to reduce.

Therefore, under the effect of thermophoresis coating, little particle moves toward pipeline center, will not produce and stick to inner-walls of duct Phenomenon.

According to the utility model one preferred embodiment, as shown in Figures 2 and 3, coagulation district 3 are provided with exchange Electric installation 31 and coagulation device 32, wherein, described AC electrical device 31 is used for providing alternating current, described coagulation the device 32 are Ac electrode, it is connected with AC electrical device 31, forms AC field.

In further preferred embodiment, described AC electrical device 31 is annular, is close to the pipeline of particle remover Inwall.

In embodiment still more preferably, as shown in Figure 4, described coagulation device 32 are positioned at particle remover Pipeline center, and place for vertical, it is parallel with the fore-and-aft plane of pipeline long axis direction.

Wherein, little particle is with Partial charge after the entrance of electric charge net, and charged little particle is in the friendship of coagulation district Produce of reciprocating vibration, due to intergranular relative motion or speed difference under stream electric field action so that mutually collide between particle and coagulate Poly-, form bulky grain.

According to the utility model one preferred embodiment, as shown in Figure 2 and Figure 4, described particulate collection zone 4 includes The heavy adsorption device 41 of grain and particle collection device 42.

In further preferred embodiment, as shown in Figure 2 and Figure 4, described particle collection device 42 is arranged at particle On heavy adsorption device 41.

In embodiment still more preferably, as shown in Figure 2 and Figure 5, described particle collection device 42 is perpendicular to institute State particle and sink adsorption device 41, and, described particle collection device 42 is parallel with the radial direction perpendicular of particle remover pipeline, i.e. Parallel with electric charge net.

Wherein, after by coagulation above district 3, little particle becomes under thermophoretic effect and coagulation the double action acting on Forming bulky grain, after bulky grain enters particulate collection zone 4, thermophoretic effect yet suffers from, therefore, and the oarse-grained direction of motion and temperature Spend the in opposite direction of gradient, i.e. the bulky grain heart in the duct moves, and then, particulate collection zone 4 is provided with particle collection device 42, move to the left or to the right along the axial direction of pipeline for blocking bulky grain, therefore, be equivalent to bulky grain is fixed on particle Collecting region 4.

In the utility model: in coagulation district 3, owing to there being the existence of alternating current, the bulky grain of little particle or formation Carry out up-down vibration, be unfavorable for powder collection, therefore, the phenomenon of powder collection will not occur in coagulation district 3；At powder collection District 4, particle sinks adsorption device 41 not connection alternating current, therefore there is not alternating current at particulate collection zone 4, and particle will not Carry out up-down vibration, but be present in the centre position of particle remover under thermophoretic effect, i.e. particle is attached to particle and sinks attached On the surface of device 41, in particulate collection zone 4, be provided with again particle collection device 42, its as baffle plate limit particle to Left or move right, be equivalent to particle is trapped in particulate collection zone 4, therefore, particulate collection zone 4 achieves the collection of particle. It is to be appreciated that when particle enters particulate collection zone 4 from coagulation district 3, be that up-down vibration enters under the effect of alternating current , therefore, the particle collection device 42 for keeping out effect will not be kept out particle and be entered particulate collection zone 4.But, reach and collect Qu Hou, does not has the effect of alternating current, only exists thermophoretic effect, and therefore, particle sinks adsorption device 41 to particle to be drawn close, and by particle Collection device 41 is kept out, it is impossible to continue flowing, it is achieved that the collection of particle.

According to the utility model one preferred embodiment, the height of described particle collection device 42 is 20～30mm.

In further preferred embodiment, the height of described particle collection device 42 is 22～28mm.

In embodiment still more preferably, the height of described particle collection device 42 is 25mm.

Wherein, the height of above-mentioned particle collection device 42 be the internal diameter of the pipeline based on particle remover be 120～150mm and Speech, when the internal diameter of the pipeline of particle remover increases or reduces, then the height of particle collection device 42 also should be in corresponding ratio Carry out increasing or reducing.

In the utility model, particle first passes through electric charge net 11, and electric charge net 11 gives particle charge；Charged particle enters Coagulation district 3, in coagulation district 3, the particle coagulation to particle remover center device 33 under the effect of thermophoresis coating 6 Draw close, and up-down vibration under alternating current, little particle gradually forms bulky grain；Bulky grain enters particulate collection zone 4, it is achieved that The collection of particle.

On the other hand the utility model provides the purposes of a kind of above-mentioned particle remover, for removing with overcritical titanium dioxide Carbon is the radioactive grain remaining in the nuclear power generating equipment of working medium.

According to the utility model one preferred embodiment, particle remover described in the utility model and nuclear power generating equipment join With for removing the radioactive grain of residual in nuclear power generating equipment.

Wherein, described nuclear power generating equipment is with supercritical carbon dioxide as working medium.

According to the utility model one preferred embodiment, as it is shown in fig. 7, described particle remover 7 is arranged in height The inside of wet cold dome 8.

In further preferred embodiment, as it is shown in fig. 7, described particle remover 7 is arranged at HTGR 8 In hot gas conduit 83 between heap body 81 and steam generator 82.

Wherein, owing to supercritical carbon dioxide fluid flows to for circulation, it, repeatedly through particle remover 7, can improve Removal efficiency to particle.

According to the utility model another preferred embodiment, as shown in Figure 8, described particle remover 7 is arranged at height The outside of wet cold dome 8.

In further preferred embodiment, as shown in Figure 8, the left end of described particle remover 7 and HTGR 8 Connecting, upper end is connected with generator 83, and right-hand member is connected with steam turbine 84.

Wherein, described particle remover 7 is to be arranged in the way of embedded between HTGR primary Ioops and secondary circuit Pipeline in, mainly when high-temperature gas-cooled reactor has an accident, prevent that there is radioactive particulate matter and leak to secondary circuit Thus leak to the problem in environment.Wherein, described particle remover 7 obtains alternating source from generator 83

In the utility model: (1) described pipeline refers to the main pipeline of particle remover；(2) coalescence refer to particle or Particulate mutually collides under external force or adheres to and be agglomerated into the process of larger particles；(3) described particle remover is for surpass Critical carbon dioxide is writing a Chinese character in simplified form of the particle remover of working medium；(4) in Fig. 2, Fig. 4 and Fig. 7, gray scale arrow represents overcritical two The flow direction of carbon oxide fluid；(5) in Fig. 2 and Fig. 4, circular expression particle；(6) in fig. 8, black arrow represents super and faces The flow direction of boundary's CO 2 fluid, described supercritical carbon dioxide fluid working medium both can flow in high-temperature gas-cooled reactor Move and also can flow in the loop；(7) Fig. 2 is axial horizontal sectional view at A-A for the Fig. 1；(8) Fig. 4 is that Fig. 1 is at B-B Axial vertical section figure, wherein, the cross section at B-B is vertical with the cross section at A-A.

The utility model is had the advantage that to include:

(1) particle remover simple in construction provided by the utility model, is suitable for large-scale production and application；

(2) particle remover provided by the utility model can remove the small particle less than 2.5 μm for the particle diameter；

(3) the particle remover provided by the utility model heart in the duct carries out powder collection, effectively prevent tiny The problem that particulate matter sticks to inner-walls of duct；

(4) particle remover provided by the utility model can be with all high temperature with supercritical carbon dioxide as working medium The coordinative composition of equipments of HTGR and Bretton energy transformation technology uses.

In of the present utility model description, it should be noted that term " on ", D score, "left", "right", " interior " and " outward " It is based on the orientation under utility model works state or position relationship in the orientation indicating or position relationship, be for only for ease of Describe the utility model and simplifying to describe, rather than instruction or the hint device of indication or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.

Above in association with being preferred embodiment illustrated the utility model, but these embodiments are only models Example, only play illustrative effect.On this basis, multiple replacement and improvement can be carried out to the utility model, these Each fall within protection domain of the present utility model.

Claims (10)

1. the particle remover with supercritical carbon dioxide as working medium, described particle remover is circular cylindrical pipe structure, It is characterized in that, described particle remover includes conduit entrance (1), duct wall (2), coagulation district (3), particulate collection zone (4) With pipe outlet (5), wherein,

Conduit entrance (1) place is provided with electric charge net (11)；

The outside of duct wall (2) is provided with thermophoresis coating (6).

2. particle remover according to claim 1, it is characterised in that described electric charge net (11) is by electric charge twine (111) Intersect and constitute.

3. particle remover according to claim 2, it is characterised in that

Described electric charge twine (111) is manganin silk；And/or

The neighbouring spacing between electric charge twine (111) is 0.5～2.5mm.

4. particle remover according to claim 1, it is characterised in that described thermophoresis coating (6) includes conductor (61), line Circle (62) and insulation material (63), wherein, described coil (62) is wound on conductor (61), and described insulation material (63) is wrapped in It is tied with outside the conductor of coil (62).

5. particle remover according to claim 4, it is characterised in that

Described coil (62) is cast iron aluminium nickel cobalt material；And/or

Described coil (62) is connected with alternating current；And/or

Described insulation material (63) is mica material.

6. the particle remover according to claim 4 or 5, it is characterised in that the thickness of described thermophoresis coating (6) is 20～ 30mm, wherein, the thickness of conductor (61) is 16～28mm, and the thickness of coil (62) and insulation material (63) is respectively 1～2mm, Wherein, the internal diameter of the pipeline based on particle remover is 120～150mm.

7. particle remover according to claim 1, it is characterised in that coagulation district (3) are provided with AC electrical device And coagulation device (32) (31).

8. particle remover according to claim 7, it is characterised in that

Described AC electrical device (31) is annular, is close to the inner side of duct wall (2)；And/or

Described coagulation device (32) are arranged at the center of pipeline, and for being vertically arranged.

9. particle remover according to claim 1, it is characterised in that it is attached that described particulate collection zone (4) includes that particle sinks Device (41) and particle collection device (42), wherein, described particle sinks adsorption device (41) for being vertically arranged, with coagulation device (32) parallel；Particle collection device (42) is arranged at particle and sinks on adsorption device (41), and to sink adsorption device (41) vertical with particle.

10. particle remover according to claim 9, it is characterised in that the height of described particle collection device (42) is 20～30mm, wherein, is 120～150mm based on the internal diameter of the pipeline of particle remover.