CN105241138A - Energy-saving oil-gas separator of ground source heat pump - Google Patents

Abstract

The invention discloses an energy-saving oil-gas separator of a ground source heat pump, and belongs to the field of oil development. The energy-saving oil-gas separator comprises a cylindrical shell, and a first heat preservation layer is nested on the outer side of the shell; a second trapezoidal heat preservation layer is fixed outside the first heat preservation layer, and a third rectangular heat preservation layer is fixed outside the second heat preservation layer. A gas inlet pipe is arranged on the upper end face of the shell, and an exhaust pipe and an oil drain pipe are arranged at the upper end and the lower end of the outer side face of the shell respectively. The multiple heat preservation layers of different heights are arranged outside the shell of the oil-gas separator to preserve heat of the shell so that different heat preservation effects in different positions of the shell can be achieved; due to the fact that the different heat preservation layers are different in height, compared with the scheme of the prior art, the manufacturing cost of the oil-gas separator can be further lowered.

Description

A kind of power saving ground-source heat pump gs-oil separator

Technical field

The invention belongs to field of oil development, particularly a kind of power saving ground-source heat pump gs-oil separator.

Background technology

Gs-oil separator is the important component part of heat pump.At the large part of conventional heat pump system four, namely when evaporimeter, condenser, compressor, choke valve work, compressor needs lubricating oil to reduce energy consumption and wearing and tearing.But, if lubricating oil is once enter evaporimeter and these two heat-exchanging components of condenser, the heat exchange efficiency of this type of heat-exchanging component will be affected greatly, thus need in compressor ejection with in the fluid-mixing of cold-producing medium and lubricating oil, the lubricating oil of liquid state is separated with the refrigerant gas of gaseous state.Here it is uses the object of gs-oil separator.The operation principle of gs-oil separator is: the mist with fluorine Lyons and lubricating oil of being sent by compressor, slowed down by cavity larger in gs-oil separator, oil gas vaporific like this will be gathered on the housing surface that is hit, by the time after the integrated larger oil droplet of vaporific Accumulation of Hydrocarbon, just can flow to the bottom of gs-oil separator, return in compressor eventually through oil return apparatus.

When gs-oil separator works, consider for two aspects, avoid condensation temperature change thus cause operating point to offset, refrigerating capacity exports unstable, and avoids cold energy to lose, and causes the object of unnecessary ability waste, needs to be incubated gs-oil separator:

But, the content of the rare consideration this respect of existing gs-oil separator, as: the gs-oil separator (CN201010237134) adopting cylindrical housings design, its shell wall side equal thickness; Adopt the cyclone type oil-gas separator (CN201410793967) of boss type housing design, its shell wall side equal thickness; Adopt the gs-oil separator (CN201010538303) of capsule-type housing design, its shell wall side equal thickness.

The thick shell settings such as above-mentioned gs-oil separator all adopts, if need to be incubated gs-oil separator, the thick shell such as then unconfinedly can only to strengthen, simultaneously can not heat emission be consistent everywhere on the housing face of gs-oil separator, adopt increasings to wait the mode of thick shells can the manufacturing cost of raising gs-oil separator greatly.

Summary of the invention

In order to solve the problem of prior art, the invention provides a kind of power saving ground-source heat pump gs-oil separator, described power saving ground-source heat pump gs-oil separator, comprising:

Cylindrical housings, is nested with the first heat-insulation layer outside described cylindrical housings, and described first heat-insulation layer has the first height value;

Be fixed with the second trapezoidal heat-insulation layer in the outside of described first heat-insulation layer, described second heat-insulation layer has the second height value;

Be fixed with the 3rd heat-insulation layer of rectangle in the outside of described second heat-insulation layer, described 3rd heat-insulation layer has third high angle value;

Wherein, the upper surface of described housing is provided with air inlet pipe, be provided with in the upper end of the lateral surface of described housing successively through the blast pipe of described first heat-insulation layer, described second heat-insulation layer and described 3rd heat-insulation layer, be provided through the oil exit pipe of described first heat-insulation layer in the lower end of the lateral surface of described housing.

Optionally, described power saving ground-source heat pump gs-oil separator, comprising:

The shape of the first half of described first heat-insulation layer meets Gaussian distribution curve, and the fit equation of described Gaussian distribution curve is

$y/H=0.92+(-0.39/(0.6\×\sqrt{1.57}\left)\right)\×e^{(-2\×{\left(\left(x/D\right)/0.6\right)}^2)};$

Wherein, H is described gs-oil separator height, and D is the section radius of cylindrical housings, and the origin of coordinates of described fit equation is housing bottom center.

Optionally, described power saving ground-source heat pump gs-oil separator, comprising:

Described first height value is greater than described second height value;

Described second height value is greater than described third high angle value.The beneficial effect that technical scheme provided by the invention is brought is:

By the multiple heat-insulation layers being provided with differing heights in the hull outside of gs-oil separator, housing is incubated, different heat insulation effects can be played to the diverse location of housing, and because different heat-insulation layers has differing heights, relative to scheme of the prior art, the manufacturing cost of gs-oil separator can also be reduced.

Accompanying drawing explanation

In order to be illustrated more clearly in technical scheme of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the plan structure schematic diagram of a kind of power saving ground-source heat pump gs-oil separator provided by the invention;

Fig. 2 is the curve synoptic diagram of first heat-insulation layer the first half matching of a kind of power saving ground-source heat pump gs-oil separator provided by the invention;

Fig. 3 is the trapezoidal matched curve schematic diagram of the second heat-insulation layer of a kind of power saving ground-source heat pump gs-oil separator provided by the invention;

Fig. 4 is the matched curve schematic diagram of the 3rd heat-insulation layer rectangle of a kind of power saving ground-source heat pump gs-oil separator provided by the invention;

Fig. 5 be a kind of power saving ground-source heat pump gs-oil separator provided by the invention do not arrange non-wait thick shell time housing front heat flow density schematic diagram;

Fig. 6 be a kind of power saving ground-source heat pump gs-oil separator provided by the invention do not arrange non-wait thick shell time back side of shell heat flow density schematic diagram;

Fig. 7 be a kind of power saving ground-source heat pump gs-oil separator provided by the invention do not arrange non-wait thick shell time housing face velocity field and speed division degree schematic diagram;

Fig. 8 be a kind of power saving ground-source heat pump gs-oil separator provided by the invention do not arrange non-wait thick shell time back side of shell velocity field and speed division degree schematic diagram;

Fig. 9 is the housing front heat flow density schematic diagram after a kind of power saving ground-source heat pump gs-oil separator provided by the invention arranges non-thick shell such as grade;

Figure 10 is the back side of shell heat flow density schematic diagram after a kind of power saving ground-source heat pump gs-oil separator provided by the invention arranges non-thick shell such as grade.

Detailed description of the invention

For making structure of the present invention and advantage clearly, below in conjunction with accompanying drawing, structure of the present invention is further described.

Embodiment one

The invention provides a kind of power saving ground-source heat pump gs-oil separator, described power saving ground-source heat pump gs-oil separator, comprising:

Cylindrical housings, is nested with the first heat-insulation layer outside described cylindrical housings, and described first heat-insulation layer has the first height value;

Be fixed with the second trapezoidal heat-insulation layer in the outside of described first heat-insulation layer, described second heat-insulation layer has the second height value;

Be fixed with the 3rd heat-insulation layer of rectangle in the outside of described second heat-insulation layer, described 3rd heat-insulation layer has third high angle value;

Wherein, the upper surface of described housing is provided with air inlet pipe, be provided with in the upper end of the lateral surface of described housing successively through the blast pipe of described first heat-insulation layer, described second heat-insulation layer and described 3rd heat-insulation layer, be provided through the oil exit pipe of described first heat-insulation layer in the lower end of the lateral surface of described housing.

In force, in order to solve the higher problem of the gs-oil separator manufacturing cost that exists in prior art, the invention provides a kind of power saving ground-source heat pump gs-oil separator, composition graphs 1, the detailed construction of this gs-oil separator is as follows:

The main body of this gs-oil separator is cylindrical housings 1, the first heat-insulation layer 2 is nested with outside this cylindrical housings 1, the second trapezoidal heat-insulation layer 3 is fixed with in the outside of the first heat-insulation layer 2, the 3rd heat-insulation layer 4 of rectangle is fixed with in the outside of the second heat-insulation layer 3, namely be outwards followed successively by the first heat-insulation layer 2, second heat-insulation layer 3, the 3rd heat-insulation layer 4 from housing 1, realize the subregion heat insulation effect to housing 1 by three difform heat-insulation layers.

Certainly, in order to realize the object being carried out by oil gas being separated, air inlet pipe 5 is provided with for inputting the mist with fluorine Lyons and lubricating oil in gs-oil separator in the upper surface of housing 1, blast pipe 6 is then provided with in the upper end of housing 1 lateral surface, for the discharge by gas in gasoline trap, in order to get rid of the oil in gs-oil separator, the lower end of housing 1 lateral surface is provided with oil exit pipe 7, and this oil exit pipe 7 is successively through described first heat-insulation layer 2, described second heat-insulation layer 3 and described 3rd heat-insulation layer 4.

The object of the invention is to, a kind of energy-conservation water resource heat pump gs-oil separator is provided, this gs-oil separator is in conjunction with flow field structure special in shell separator, under the setting of not uniform thickness shell wall side, large at the wall thickness of high easily heat radiation place of wall flow velocity, wall flow velocity is little, and to be not easy the wall thickness of heat radiation place little, thus reach and be both incubated the cold-producing medium in gs-oil separator, saves again the object of material.

The invention provides a kind of power saving ground-source heat pump gs-oil separator, this gs-oil separator comprises cylindrical housings, hull outside is nested with the first heat-insulation layer, the outside of the first heat-insulation layer is fixed with the second trapezoidal heat-insulation layer, the 3rd heat-insulation layer of rectangle is fixed with in the outside of the second heat-insulation layer, the upper surface of described housing is provided with air inlet pipe, is respectively arranged with blast pipe and oil exit pipe in the top and bottom of the lateral surface of housing.By the multiple heat-insulation layers being provided with differing heights in the hull outside of gs-oil separator, housing is incubated, different heat insulation effects can be played to the diverse location of housing, and because different heat-insulation layers has differing heights, relative to scheme of the prior art, the manufacturing cost of gs-oil separator can also be reduced.

Optionally, described power saving ground-source heat pump gs-oil separator, comprising:

The shape of the first half of described first heat-insulation layer meets Gaussian distribution curve, and the fit equation of described Gaussian distribution curve is

$y/H=0.92+(-0.39/(0.6\×\sqrt{1.57}\left)\right)\×e^{(-2\×{\left(\left(x/D\right)/0.6\right)}^2)}$

Wherein, H is described gs-oil separator height, and D is the section radius of cylindrical housings, and the origin of coordinates of described fit equation is housing bottom center.

$y/H=0.92+(-0.39/(0.6\×\sqrt{1.57}\left)\right)\×e^{(-2\×{\left(\left(x/D\right)/0.6\right)}^2)}$

In force, the profile design of the first half of the first heat-insulation layer is become the shape meeting Gaussian distribution curve, as shown in Figure 2, can improve the heat insulation effect to housing 1 like this, concrete theoretical foundation is described the fitted shapes of curve below.

Optionally, described power saving ground-source heat pump gs-oil separator, comprising:

Described first height value is greater than described second height value;

Described second height value is greater than described third high angle value.

In force, in order to reach best heat insulation effect, need to limit the height of three layers of heat-insulation layer, the number of plies of the increase heat-insulation layer suitable in the region needing most insulation, in the number of plies that insulation demand is not the suitable reduction heat-insulation layer in very strong region, such could while enough heat insulation effects be provided, farthest reduce the manufacturing cost of gs-oil separator.

According to Fig. 1, the second heat-insulation layer is trapezoidal from front view angle, this trapezoidal matching schematic diagram as shown in Figure 3, top Cong ?0.1D to 0.1D, following Cong ?0.22D to 0.22D, high from 0.06H to 1H.

3rd heat-insulation layer top is seen as rectangle from the angle shown in Fig. 1, width Cong ?0.08D to 0.08D, height from 0.3H to 1H.H is gs-oil separator height, and as shown in Figure 4, D is gs-oil separator radius to the matching schematic diagram of this rectangle, and the origin of coordinates is housing 1 bottom centre.

Here the height value of three layers of heat-insulation layer is limited, the first heat-insulation layer 2 pressing close to housing 1 is most made to have maximum height value, the second heat-insulation layer 3 nested outside the first heat-insulation layer 2 has moderate height value, be positioned at outermost 3rd heat-insulation layer 4 and then there is minimum height value, can be easy to find out from Fig. 1, three layers of heat-insulation layer outside housing 1 present the design reduced highly gradually from inside to outside, and along with the reduction of housing 1 height, the insulation layer thickness outside it increases gradually.Here why design like this, reason is as follows:

Known by known turn hot formula:

$Q=\frac{A(tn-tw)}{\frac{1}{hn}+\frac{d}{k}+\frac{1}{hw}}---\left(1\right)$

In formula, Q is heat output, and tn, tw are housing internal and external temperature, and hn, hw are convection transfer rate inside and outside housing.D is insulation layer thickness.A is area of dissipation.

From above formula, k, A are constant when selected housing, and tw is the outer temperature of housing, is also constant, and tn is mainly by the impact of hn, hw and d, and under stable condition, (being also under this gs-oil separator long-time steady operation condition) is also constant.Under general work environment, housing is generally arranged in equipment room, so external environment condition is stablized, hw is also constant.

So heat output Q is mainly subject to the impact of hn and d, traditional method is, thickeies, also namely increase d for whole housing, thus heat output Q is reduced, and keeps gs-oil separator inner refrigerant low temperature, thus reaches energy-conservation object.

In fact, this way concretely wastes lot of materials, and not energy-conservation.As shown in Fig. 5, Fig. 6, when gs-oil separator works, when d mono-timing of housing shell, the heat flow distribution on shell wall side is also uneven.Some places heat flow is high, and other local heat flows are low.The main cause of this phenomenon is caused to be that hn is different at wall everywhere.The local hot-fluid that hn is high is high, and the local hot-fluid that hn is low is low.So, next it is envisaged that how to thicken thickness of shell d in the place that hn is high, thus the prerequisite saving most material is made to be issued to heat insulation effect?

In addition, when thickening wall, the amount of thickening is not endless, and heat flow density Q is equal everywhere preferably to make shell wall side.Again under condition, can wall due to " cold bridge " effect (" cold bridge " effect is known in field) of causing of wall heat flux inequality.

From heat transfer formula 1, in a steady working condition want another housing everywhere heat flow Q be constant, then

$\frac{1}{hn}+\frac{d}{k}=C---\left(2\right)$

Wherein, C is constant, and k is heat-insulation layer thermal conductivity factor, so can observe the situation of change of hn in housing, adjusts d, thus reach the object making surface of shell hot-fluid consistent according to different hn.

From engineering viewpoint:

hn＝a×V+b(3)

Wherein, a and b is heat convection constant 1 and heat convection constant 2, and its value is relevant from different material categorys, can look at each large design manual.V is the air velocity that wall goes out.Formula 3 is brought in 2 and can be drawn:

$\frac{1}{a\×V+b}+\frac{d}{k}=C---\left(4\right)$

Suppose that insulation layer thickness when wind speed V is 0 is standard thickness d0, then the additional thickness di when wind speed V is not 0 is:

$\frac{1}{a\×0+b}+\frac{d0}{k}=\frac{1}{a\×V+b}+\frac{d0+di}{k}---\left(5\right)$

Arrange, additional thickness di is:

$di=\frac{k}{b}-\frac{k}{a\×V+b}---\left(6\right)$

Visible, additional thickness di is only relevant with the flow velocity through flow surface, and flow velocity V is larger, then di should more after.

Housing system for the ease of this type of gs-oil separator is done, and supposes that the maximum wind velocity of casing surroundings is Vmax here, according to flow velocity V difference, thickness of shell is divided into 4 layers:

1. the 0th layer, insulation layer thickness when also namely wind speed is 0, thickness calculates according to during V=0.

2. the 1st layer, insulation layer thickness when also namely wind speed is 0 to 1/3Vmax, thickness calculates according to during V=1/3Vmax.

3. the 2nd layer, insulation layer thickness when also namely wind speed is 2/3Vmax, thickness calculates according to during V=2/3Vmax.

4. the 3rd layer, insulation layer thickness when also namely wind speed is Vmax, thickness calculates according to during Vmax.

With heat pump, ducted refrigerant flow rates is 10m/s (known, each large handbook can be looked into), and after entering gs-oil separator, cross-sectional area becomes large, and Peak Flow Rate is 3m/s.Also namely, according to foregoing teachings, thickness of shell is divided into four layers by the present invention, also namely:

1. the 0th layer, insulation layer thickness when also namely wind speed is 0, thickness calculates according to during V=0, and additional thickness is 0.

2. the 1st layer, insulation layer thickness when also namely wind speed is 0 to 1m/s, thickness calculates according to during 1m/s, and additional thickness is

3. the 2nd layer, insulation layer thickness when also namely wind speed is 1m/s to 2m/s, thickness calculates according to during 2m/s, and additional thickness is

4. the 3rd layer, insulation layer thickness when also namely wind speed is 2m/s to 3m/s, thickness calculates according to during 3m/s, and additional thickness is

Based on this, here calculate cold-producing medium enter gs-oil separator after wall velocity field, and by velocity field according to above-mentioned current gradient 0m/s, 1m/s, 2m/s, 3m/s divide at all levels, as Fig. 7, Fig. 8.On this basis, the boundary curve structure under different levels is described by nonlinear fitting.Finally draw namely energy-conservation, save again the shell structure form of material.

Based on above-mentioned theory, can learn, according to the difference of gas flow rate, need the heat-insulation layer that different-thickness is set at the different parts of gs-oil separator.

Under the setting of this uneven gauge housing.Operationally, the thickness of flow velocity general goal is large, and the thickness of shell at the little place of flow velocity is little, thus reaches the heat flow density object completely equal along each face of housing everywhere, sees Fig. 9 and Figure 10 for gs-oil separator.Thus under the prerequisite of saving case material most, greatly improve the heat-insulating property of housing.

The invention provides a kind of power saving ground-source heat pump gs-oil separator, this gs-oil separator comprises cylindrical housings, hull outside is nested with the first heat-insulation layer, the outside of the first heat-insulation layer is fixed with the second trapezoidal heat-insulation layer, the 3rd heat-insulation layer of rectangle is fixed with in the outside of the second heat-insulation layer, the upper surface of described housing is provided with air inlet pipe, is respectively arranged with blast pipe and oil exit pipe in the top and bottom of the lateral surface of housing.By the multiple heat-insulation layers being provided with differing heights in the hull outside of gs-oil separator, housing is incubated, different heat insulation effects can be played to the diverse location of housing, and because different heat-insulation layers has differing heights, relative to scheme of the prior art, the manufacturing cost of gs-oil separator can also be reduced.

It should be noted that: a kind of power saving ground-source heat pump gs-oil separator that above-described embodiment provides carries out the embodiment of Oil-gas Separation, only as the explanation in actual applications of this gs-oil separator, can also use in other application scenarios according to actual needs and by above-mentioned gs-oil separator, its specific implementation process is similar to above-described embodiment, repeats no more here.

Each sequence number in above-described embodiment, just to describing, does not represent the sequencing in the assembling of each parts or use procedure.

The foregoing is only embodiments of the invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (3)

1. a power saving ground-source heat pump gs-oil separator, is characterized in that, described power saving ground-source heat pump gs-oil separator, comprising:

Cylindrical housings, is nested with the first heat-insulation layer outside described cylindrical housings, and described first heat-insulation layer has the first height value;

Be fixed with the second trapezoidal heat-insulation layer in the outside of described first heat-insulation layer, described second heat-insulation layer has the second height value;

Be fixed with the 3rd heat-insulation layer of rectangle in the outside of described second heat-insulation layer, described 3rd heat-insulation layer has third high angle value;

Wherein, the upper surface of described housing is provided with air inlet pipe, be provided with in the upper end of the lateral surface of described housing successively through the blast pipe of described first heat-insulation layer, described second heat-insulation layer and described 3rd heat-insulation layer, be provided through the oil exit pipe of described first heat-insulation layer in the lower end of the lateral surface of described housing.

2. according to the power saving ground-source heat pump gs-oil separator shown in claim 1, it is characterized in that, described power saving ground-source heat pump gs-oil separator, comprising:

The shape of the first half of described first heat-insulation layer meets Gaussian distribution curve, and the fit equation of described Gaussian distribution curve is

$y/H=0.92+(-0.39/(0.6\×\sqrt{1.57}\left)\right)\×e^{(-2\×{\left(\left(x/D\right)/0.6\right)}^2)};$

Wherein, H is described gs-oil separator height, and D is the section radius of cylindrical housings, and the origin of coordinates of described fit equation is housing bottom center.

3. according to the power saving ground-source heat pump gs-oil separator shown in claim 1, it is characterized in that, described power saving ground-source heat pump gs-oil separator, comprising:

Described first height value is greater than described second height value;

Described second height value is greater than described third high angle value.