CN211782081U

CN211782081U - Steam type first-class lithium bromide absorption heat pump unit arranged up, middle and down in cooling section

Info

Publication number: CN211782081U
Application number: CN202020339009.6U
Authority: CN
Inventors: 毛洪财; 王炎丽
Original assignee: Shuangliang Eco Energy Systems Co Ltd
Current assignee: Shuangliang Eco Energy Systems Co Ltd
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-10-27
Anticipated expiration: 2030-03-18

Abstract

The utility model relates to a first type of lithium bromide absorption heat pump unit of steam type arranged up, middle and down in a cooling section, which comprises a steam generator, a condenser, an evaporator, an absorber, a heat exchanger, a solution pump and a refrigerant pump, wherein the steam generator and the condenser are divided into a plurality of sections, each section of the steam generator and the condenser are separately arranged in one cylinder, and each cylinder is arranged up, middle and down in sequence according to the pressure in the cylinder from high to low; the evaporator and the absorber are in a fifth cylinder, which is arranged at the bottom most. The unit realizes the super large heating capacity, super large volume, small floor area and high comprehensive performance coefficient of the heat pump by a brand new structure and flow under the condition of poor parameter conditions provided by an external system, and also solves the problem of large transportation.

Description

Steam type first-class lithium bromide absorption heat pump unit arranged up, middle and down in cooling section

Technical Field

The utility model relates to a refrigeration plant technical field, concretely relates to send out and cool off first type lithium bromide absorption heat pump unit of steam type of arranging from top to bottom.

Background

In the areas where a heat source is needed in production process and life and low-temperature waste heat exists, a first-class lithium bromide absorption heat pump unit (shown in figure 1) is adopted to extract low-temperature waste heat, and a medium-temperature heat source higher than the low-temperature heat source by more than 40 ℃ is prepared, so that a large amount (more than 40%) of medium-pressure steam consumption can be saved, comprehensive utilization of energy is realized, a large amount of application is obtained in recent years, and better economic and social benefits are obtained.

In practical application, sometimes the external system provides poor parameter conditions, the steam pressure is low, the temperature of the residual hot water inlet and outlet is low, the temperature difference of the hot water inlet and outlet is large, and the common heat pump cannot meet the requirements under the conditions that the area of a user machine room is limited and a single heat pump needs large heating capacity. How to overcome the problem of poor parameter conditions, make the heating capacity of a single heat pump large, occupy small area, improve the comprehensive performance coefficient of the heat pump unit, recover more waste heat and save energy becomes one of the important subjects of the current research.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned not enough, provide a first type lithium bromide absorption heat pump unit of steam type is arranged from top to bottom to the cooling segmentation, it can realize that single heat pump set heating capacity is big, area is little, coefficient of performance is high, retrieve low temperature waste heat, energy can be saved, easy operation under the poor condition of parameter condition.

The purpose of the utility model is realized like this:

a first-class lithium bromide absorption heat pump unit with steam arranged up, middle and down of a cooling section comprises a steam generator, a condenser, an evaporator, an absorber, a heat exchanger, a solution pump and a refrigerant pump,

the steam generator and the condenser are divided into a plurality of sections, each section of the steam generator and the condenser are independently arranged in a cylinder, and each cylinder is sequentially arranged from top to bottom according to the pressure in the cylinder;

the evaporator and the absorber are arranged in a fifth cylinder, and the fifth cylinder is arranged at the bottommost part;

between each section of steam generator and the condenser, the refrigerant water condensed by the upper condenser flows into the condenser barrel body at the lower part through the refrigerant water U-shaped pipe, and the solution concentrated by the upper steam generator flows into the steam generator spray pipe at the lower part through the solution U-shaped pipe.

Steam of an external system is connected in parallel and enters the steam generator tube bundles of each section for condensation, and condensed steam condensate is combined together and flows out through a steam condensate outlet pipe;

the residual heat water enters an evaporator tube bundle to be cooled;

the hot water is connected in series and sequentially enters the absorber and each condenser tube bundle from bottom to top to complete the whole temperature rise process.

Preferably, the steam generator and the condenser are divided into two sections to form a first steam generator and a first condenser, a second steam generator and a second condenser, the first steam generator and the first condenser have the highest pressure in the first cylinder, the second steam generator and the second condenser have higher pressure in the second cylinder, the first cylinder is arranged above the second cylinder, the fifth cylinder is arranged at the bottommost part, a first refrigerant water U-shaped pipe of the first condenser is connected into a second condenser cavity, and a refrigerant water U-shaped pipe of the second condenser is connected into an evaporator cavity; a first solution U-shaped pipe of the first steam generator is connected into a spray pipe of the second steam generator, a solution U-shaped pipe of the second steam generator is connected into a spray pipe of the absorber through the heat exchanger, and dilute solution discharged from the absorber is pumped into the spray pipe of the first steam generator at the uppermost part by the solution pump.

Preferably, the steam generator and the condenser are divided into three sections, namely a first steam generator and a first condenser, a second steam generator and a second condenser, and a third steam generator and a third condenser, wherein the first steam generator and the first condenser have the highest pressure in the first cylinder, the second steam generator and the second condenser have higher pressure in the second cylinder, and the third steam generator and the third condenser have lower pressure in the third cylinder; arranging a first barrel above a second barrel, arranging a third barrel below the second barrel, and arranging a fifth barrel at the bottommost part;

a first refrigerant water U-shaped pipe of the first condenser is connected into a second condenser cavity, a second refrigerant water U-shaped pipe of the second condenser is connected into a third condenser cavity, and a refrigerant water U-shaped pipe of the third condenser is connected into an evaporator cavity;

a first solution U-shaped pipe of the first steam generator is connected into a second steam generator spray pipe, a second solution U-shaped pipe of the second steam generator is connected into a third steam generator spray pipe, a solution U-shaped pipe of the third steam generator is connected into an absorber spray pipe through a heat exchanger, and dilute solution discharged from an absorber is pumped into the first steam generator spray pipe at the uppermost part by a solution pump.

Preferably, the steam generator and the condenser are divided into four sections, namely a first steam generator and a first condenser, a second steam generator and a second condenser, a third steam generator and a third condenser, and a fourth steam generator and a fourth condenser; the pressure of the first steam generator and the first condenser in the first cylinder is highest, the pressure of the second steam generator and the second condenser in the second cylinder is higher, the pressure of the third steam generator and the third condenser in the third cylinder is lower, and the pressure of the fourth steam generator and the fourth condenser in the fourth cylinder is lower;

arranging a first barrel above a second barrel, arranging a third barrel below the second barrel, arranging a fourth barrel below the third barrel, and arranging a fifth barrel at the bottommost part;

a first refrigerant water U-shaped pipe of the first condenser is connected into a second condenser cavity, a second refrigerant water U-shaped pipe of the second condenser is connected into a third condenser cavity, a third refrigerant water U-shaped pipe of the third condenser is connected into a fourth condenser cavity, and a refrigerant water U-shaped pipe of the fourth condenser is connected into an evaporator cavity;

a first solution U-shaped pipe of the first steam generator is connected into a second steam generator spray pipe, a second solution U-shaped pipe of the second steam generator is connected into a third steam generator spray pipe, a third solution U-shaped pipe of the third steam generator is connected into a fourth steam generator spray pipe, a solution U-shaped pipe of the fourth steam generator is connected into an absorber spray pipe through a heat exchanger, and dilute solution discharged from an absorber is pumped into the first steam generator spray pipe at the uppermost part by a solution pump.

The utility model has the advantages that:

through the brand new structure and the brand new process, the steam generator and the condenser are divided into multiple sections, the temperature rise gradient of hot water is reasonably utilized, the concentration difference of solution circulation is improved, the heat exchange temperature difference is increased, the heat exchange area is reduced, the material cost is reduced, the performance coefficient of a unit is improved, low-temperature waste heat is recycled more, steam is saved, comprehensive utilization of energy is realized, and the problems that the parameter condition is poor and the working condition is difficult to realize are solved; the pressure in each barrel is arranged from top to bottom in sequence from high to low, the solution and the refrigerant flow naturally flow by means of height difference and pressure difference, a circulating pump for conveying media is saved, the single heat pump unit is oversized, the unit installation occupied area is reduced, each independent barrel of the unit is arranged in the height direction, split transportation can be achieved, and the problem that large units are ultra-tall and ultra-wide in transportation is solved.

Drawings

Fig. 1 is a flow chart of the operation of a conventional steam-type first-type lithium bromide absorption heat pump unit.

Fig. 2 is a flow chart of the operation of embodiment 1 of the first-type lithium bromide absorption heat pump unit of the steam type arranged up, middle and down in the cooling section of the present invention.

Fig. 3 is a flow chart of the operation of the first-type lithium bromide absorption heat pump unit of the steam type arranged up, middle and down in the cooling section of the present invention, as shown in example 2.

Fig. 4 is a flow chart of the operation of the first-type lithium bromide absorption heat pump unit of the steam type arranged up, middle and down in the cooling section of the present invention in example 3.

In the figure: the system comprises a steam generator 1, a condenser 2, an evaporator 3, an absorber 4, a heat exchanger 5, a solution pump 6, a refrigerant pump 7, a refrigerant water U-shaped pipe 8, a solution U-shaped pipe 9, a steam condensate outlet pipe 10, a steam inlet adjusting valve 11, a hot water outlet pipe 12, a residual hot water outlet pipe 13, a residual hot water inlet pipe 14, a hot water inlet pipe 15, a first steam generator 16, a first condenser 17, a second steam generator 18, a second condenser 19, a first refrigerant water U-shaped pipe 20, a first solution U-shaped pipe 21, a third steam generator 22, a third condenser 23, a second refrigerant water U-shaped pipe 24, a second solution U-shaped pipe 25, a fourth steam generator 26, a fourth condenser 27, a third refrigerant water U-shaped pipe 28, a third solution U-shaped pipe 29, a first cylinder 30, a second cylinder 31, a third cylinder 32, a fourth cylinder 33 and a fifth cylinder 34.

Detailed Description

A first-class lithium bromide absorption heat pump unit of a steam type is arranged in an upper-middle-lower mode on a cooling section, and comprises a steam generator, a condenser, an evaporator 3, an absorber 4, a heat exchanger 5, a solution pump 6, a refrigerant pump 7, pipelines, valves and a control system, wherein the pipelines, the valves and the control system are connected among all the parts;

the evaporator 3 and the absorber 4 are in a fifth barrel 34, and the fifth barrel 34 is arranged at the bottommost part;

The steam of the external system is connected in parallel and enters the steam generator tube bundles of each section for condensation, the condensed steam condensate is combined together and flows out through a steam condensate outlet pipe 10, and a steam inlet regulating valve 11 is arranged on a steam inlet pipe.

The residual heat water enters the tube bundle of the evaporator 3 to be cooled, and the residual heat water enters and exits the evaporator 3 through the residual heat water inlet pipe 14 and the residual heat water outlet pipe 13;

the hot water is connected in series and sequentially enters the absorber 4 and each condenser tube bundle from bottom to top to complete the whole temperature rise process. Hot water enters and exits the unit through the hot water inlet pipe 15 and the hot water outlet pipe 12.

Example 1:

as shown in fig. 2, a first type of lithium bromide absorption heat pump unit of a steam type with upper, middle and lower arrangement of a cooling section comprises a steam generator, a condenser, an evaporator 3, an absorber 4, a heat exchanger 5, a solution pump 6, a refrigerant pump 7, and pipelines, valves and a control system for connecting all the components, wherein the steam generator and the condenser are divided into two sections to form a first steam generator 16, a first condenser 17, a second steam generator 18 and a second condenser 19; the pressure of the first steam generator 16 and the first condenser 17 is highest in the first barrel 30, and the pressure of the second steam generator 18 and the second condenser 19 is higher in the second barrel 31; the first cylinder 30 is arranged above the second cylinder 31, and the fifth cylinder 34 is arranged at the bottommost part; a first refrigerant water U-shaped pipe 20 of the first condenser 17 is connected into a cavity of a second condenser 19, and a refrigerant water U-shaped pipe 8 of the second condenser 19 is connected into a cavity of the evaporator 3; a first solution U-shaped pipe 21 of the first steam generator 16 is connected into a spray pipe of the second steam generator 18, a solution U-shaped pipe 9 of the second steam generator 18 is connected into a spray pipe of the absorber 4 through a heat exchanger 5, and a solution pump 6 pumps the dilute solution from the absorber into the spray pipe of the first steam generator 16 at the uppermost part.

The steam of the external system enters the first steam generator 16 and the second steam generator 18 in parallel to be condensed, and condensed steam and condensed water are combined together and flow out through the steam and condensed water outlet pipe 10; the residual heat water enters the tube bundle of the evaporator 3 to be cooled; the hot water is connected in series, firstly enters the absorber 4, then enters the second condenser 19 and finally enters the tube bundle of the first condenser 17 to complete the whole temperature rise process.

Example 2:

as shown in fig. 3, a first type of lithium bromide absorption heat pump unit of a steam type is arranged in the upper, middle and lower parts of a cooling section, and comprises a steam generator, a condenser, an evaporator 3, an absorber 4, a heat exchanger 5, a solution pump 6, a refrigerant pump 7, and pipelines, valves and a control system for connecting all parts, wherein the steam generator and the condenser are divided into three sections, namely a first steam generator 16, a first condenser 17, a second steam generator 18, a second condenser 19, a third steam generator 22 and a third condenser 23; the pressure of the first steam generator 16 and the first condenser 17 is highest in the first cylinder 30, the pressure of the second steam generator 18 and the second condenser 19 is higher in the second cylinder 31, and the pressure of the third steam generator 22 and the third condenser 23 is lower in the third cylinder 32; the first cylinder 30 is arranged above the second cylinder 31, the third cylinder 32 is arranged below the second cylinder 31, and the fifth cylinder 34 is arranged at the bottommost part; a first refrigerant water U-shaped pipe 20 of the first condenser 17 is connected into a cavity of a second condenser 19, a second refrigerant water U-shaped pipe 24 of the second condenser 19 is connected into a cavity of a third condenser 23, and a refrigerant water U-shaped pipe 8 of the third condenser 23 is connected into a cavity of the evaporator 3; the first solution U-shaped pipe 21 of the first steam generator 16 is connected into a spray pipe of the second steam generator 18, the second solution U-shaped pipe 25 of the second steam generator 18 is connected into a spray pipe of the third steam generator 22, the solution U-shaped pipe 9 of the third steam generator 22 is connected into a spray pipe of the absorber 4 through the heat exchanger 5, and the solution pump 6 pumps the dilute solution discharged from the absorber 4 into the spray pipe of the first steam generator 16 at the uppermost part.

The steam of the external system enters the first steam generator 16, the second steam generator 18 and the third steam generator 22 in parallel for condensation, and condensed steam and condensed water are combined together and flow out through the steam and condensed water outlet pipe 10; the residual heat water enters the tube bundle of the evaporator 3 to be cooled; the hot water is connected in series and sequentially enters the absorber 4, the third condenser 23, the second condenser 19 and the first condenser 17 tube bundle to complete the whole temperature rise process.

Example 3:

as shown in fig. 4, a first type of lithium bromide absorption heat pump unit of a steam type is arranged in the upper, middle and lower parts of a cooling section, and comprises a steam generator, a condenser, an evaporator 3, an absorber 4, a heat exchanger 5, a solution pump 6, a refrigerant pump 7, and pipelines, valves and a control system for connecting all parts, wherein the steam generator and the condenser are divided into four sections, namely a first steam generator 16, a first condenser 17, a second steam generator 18, a second condenser 19, a third steam generator 22, a third condenser 23, a fourth steam generator 26 and a fourth condenser 27; the pressure of the first steam generator 16 and the first condenser 17 is highest in the first barrel 30, the pressure of the second steam generator 18 and the second condenser 19 is higher in the second barrel 31, the pressure of the third steam generator 22 and the third condenser 23 is lower in the third barrel 32, and the pressure of the fourth steam generator 26 and the fourth condenser 27 is lower in the fourth barrel 33; arranging the first cylinder 30 above the second cylinder 31, the third cylinder 32 below the second cylinder 31, the fourth cylinder 33 below the third cylinder 32, and the fifth cylinder 34 at the lowermost part; a first refrigerant water U-shaped pipe 20 of the first condenser 17 is connected into a cavity of a second condenser 19, a second refrigerant water U-shaped pipe 24 of the second condenser 19 is connected into a cavity of a third condenser 23, a third refrigerant water U-shaped pipe 28 of the third condenser 23 is connected into a cavity of a fourth condenser 27, and a refrigerant water U-shaped pipe 8 of the fourth condenser 27 is connected into a cavity of the evaporator 3; a first solution U-shaped pipe 21 of the first steam generator 16 is connected into a spray pipe of the second steam generator 18, a second solution U-shaped pipe 25 of the second steam generator 18 is connected into a spray pipe of the third steam generator 22, a third solution U-shaped pipe 29 of the third steam generator 22 is connected into a spray pipe of the fourth steam generator 26, a solution U-shaped pipe 9 of the fourth steam generator 26 is connected into a spray pipe of the absorber 4 through a heat exchanger 5, and a dilute solution discharged from the absorber is pumped into the spray pipe of the first steam generator 16 at the uppermost part by a solution pump 6.

The steam of the external system enters the first steam generator 16, the second steam generator 18, the third steam generator 22 and the fourth steam generator 26 in parallel for condensation, and condensed steam and condensed water are combined together and flow out through the steam and condensed water outlet pipe 10; the residual heat water enters the tube bundle of the evaporator 3 to be cooled; the hot water is connected in series and sequentially enters the absorber 4, the fourth condenser 27, the third condenser 23, the second condenser 19 and the first condenser 17 tube bundle to complete the whole temperature rise process.

In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides a first type of lithium bromide absorption heat pump unit of steam type arranges from top to bottom in refrigeration section, includes steam generator, condenser, evaporimeter (3), absorber (4), heat exchanger (5), solution pump (6), cryogen pump (7), its characterized in that:

the evaporator (3) and the absorber (4) are arranged in a fifth cylinder (34), and the fifth cylinder (34) is arranged at the bottommost part;

2. The first-type lithium bromide absorption heat pump unit with the upper part, the middle part and the lower part arranged in the cooling section as claimed in claim 1, wherein:

steam of an external system is parallelly connected and enters the steam generator tube bundles of all sections to be condensed, and condensed steam condensate is combined together and flows out through a steam condensate outlet pipe (10);

the residual heat water enters the tube bundle of the evaporator (3) to be cooled;

the hot water sequentially enters the absorber (4) and each condenser tube bundle from bottom to top in series to complete the whole temperature rise process.

3. The first-type lithium bromide absorption heat pump unit with the upper part, the middle part and the lower part arranged in the cooling section as claimed in claim 1 or 2, wherein:

the steam generator and the condenser are divided into a first steam generator (16), a first condenser (17), a second steam generator (18) and a second condenser (19) in two sections, the pressure of the first steam generator (16) and the first condenser (17) is highest in the first barrel (30), the pressure of the second steam generator (18) and the second condenser (19) is higher in the second barrel (31), the first barrel (30) is arranged above the second barrel (31), and the fifth barrel (34) is arranged at the bottommost part;

a first refrigerant water U-shaped pipe (20) of the first condenser (17) is connected into a cavity of a second condenser (19), and a refrigerant water U-shaped pipe (8) of the second condenser (19) is connected into a cavity of the evaporator (3);

a first solution U-shaped pipe (21) of the first steam generator (16) is connected into a spray pipe of the second steam generator (18), a solution U-shaped pipe (9) of the second steam generator (18) is connected into a spray pipe of the absorber (4) through a heat exchanger (5), and a solution pump (6) pumps the dilute solution discharged from the absorber into the spray pipe of the first steam generator (16) at the uppermost part.

4. The first-type lithium bromide absorption heat pump unit with the upper part, the middle part and the lower part arranged in the cooling section as claimed in claim 1 or 2, wherein: the steam generator and the condenser are divided into three sections, namely a first steam generator (16), a first condenser (17), a second steam generator (18), a second condenser (19), a third steam generator (22) and a third condenser (23), wherein the pressure of the first steam generator (16) and the first condenser (17) in the first barrel (30) is highest, the pressure of the second steam generator (18) and the second condenser (19) in the second barrel (31) is higher, and the pressure of the third steam generator (22) and the third condenser (23) in the third barrel (32) is lower;

arranging a first cylinder (30) above a second cylinder (31), a third cylinder (32) below the second cylinder (31), and a fifth cylinder (34) at the bottommost part;

a first refrigerant water U-shaped pipe (20) of the first condenser (17) is connected into a cavity of a second condenser (19), a second refrigerant water U-shaped pipe (24) of the second condenser (19) is connected into a cavity of a third condenser (23), and a refrigerant water U-shaped pipe (8) of the third condenser (23) is connected into a cavity of the evaporator (3);

a first solution U-shaped pipe (21) of the first steam generator (16) is connected into a spray pipe of the second steam generator (18), a second solution U-shaped pipe (25) of the second steam generator (18) is connected into a spray pipe of the third steam generator (22), a solution U-shaped pipe (9) of the third steam generator (22) is connected into a spray pipe of the absorber (4) through the heat exchanger (5), and dilute solution discharged from the absorber (4) is pumped into the spray pipe of the first steam generator (16) at the uppermost part by the solution pump (6).

5. The first-type lithium bromide absorption heat pump unit with the upper part, the middle part and the lower part arranged in the cooling section as claimed in claim 1 or 2, wherein: the steam generator and the condenser are divided into a first steam generator (16) and a first condenser (17), a second steam generator (18) and a second condenser (19), a third steam generator (22) and a third condenser (23), and a fourth steam generator (26) and a fourth condenser (27) in four sections; the pressure of the first steam generator (16) and the first condenser (17) is highest in the first barrel (30), the pressure of the second steam generator (18) and the second condenser (19) is higher in the second barrel (31), the pressure of the third steam generator (22) and the third condenser (23) is lower in the third barrel (32), and the pressure of the fourth steam generator (26) and the fourth condenser (27) is lower in the fourth barrel (33);

arranging a first cylinder (30) above a second cylinder (31), a third cylinder (32) below the second cylinder (31), a fourth cylinder (33) below the third cylinder (32), and a fifth cylinder (34) at the bottommost part;

a first refrigerant water U-shaped pipe (20) of the first condenser (17) is connected into a cavity of a second condenser (19), a second refrigerant water U-shaped pipe (24) of the second condenser (19) is connected into a cavity of a third condenser (23), a third refrigerant water U-shaped pipe (28) of the third condenser (23) is connected into a cavity of a fourth condenser (27), and a refrigerant water U-shaped pipe (8) of the fourth condenser (27) is connected into a cavity of the evaporator (3);

a first solution U-shaped pipe (21) of the first steam generator (16) is connected into a spray pipe of the second steam generator (18), a second solution U-shaped pipe (25) of the second steam generator (18) is connected into a spray pipe of the third steam generator (22), a third solution U-shaped pipe (29) of the third steam generator (22) is connected into a spray pipe of the fourth steam generator (26), a solution U-shaped pipe (9) of the fourth steam generator (26) is connected into a spray pipe of the absorber (4) through the heat exchanger (5), and dilute solution discharged from the absorber is pumped into the spray pipe of the first steam generator (16) at the uppermost part by the solution pump (6).