Horizontal shell pass falling film fluorine evaporation tube pass steam condenser
By designing a horizontal shell-side falling film fluorine evaporator with tube-side steam condenser, the problems of low heat transfer performance and non-compact structure of existing steam condensers in low-temperature evaporative heat pump systems are solved. This design achieves efficient and low-cost steam condensation and is easy to install and maintain, making it suitable for industries such as food, brewing, chemical, and wastewater treatment.
Patent Information
- Application Number
- CN202423241970.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing steam condensers in low-temperature evaporative heat pump systems suffer from problems such as low heat transfer performance, non-compact structure, high cost, and difficulty in installation and maintenance. In particular, the liquid carryover problem in horizontal structures affects the reliable operation of centrifugal compressors, while vertical structures are tall and inconvenient to transport.
A horizontal shell-side falling film fluorine evaporator with tube-side steam condenser is adopted. By setting a falling film distributor assembly and internal and external enhanced high-efficiency heat exchange tubes in the shell, the liquid fluorine working fluid is evenly distributed and two-stage condensation operation is achieved, avoiding the extraction of steam before condensation.
It improves heat transfer efficiency, reduces refrigerant charge, has a compact structure, low cost, is easy to install and maintain, and ensures reliable operation of the centrifugal compressor.
Smart Images
Figure CN223580290U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heat pump technical field especially is related to a horizontal shell process falling film type fluorine evaporation pipe process steam condenser. BACKGROUND
[0002] At present, in the process flow of many food, brewing, chemical industry, sewage treatment and other industries, the energy saving demand is more and more urgent, and heat pump as a kind of energy saving application is more and more widely used. Solution concentration is an important link in the process flow of these industries, and low-temperature evaporation heat pump system for realizing water evaporation and condensate collection has become a more and more common application. In the low-temperature evaporation heat pump system, compared with the fluorine system, the steam generator is the condenser (the heat pump fluorine system circulating medium condenses and releases heat, and the water or solution is heated, so that the water or other components evaporate to produce steam, thereby realizing the water removal or concentration of the material) ; compared with the fluorine system, the steam condenser is the evaporator (the heat pump fluorine system circulating medium evaporates and absorbs heat, absorbs the heat of the steam, and makes the steam condense into liquid, thereby collecting). The existing steam condenser has horizontal and vertical structures, the horizontal structure mainly adopts the design of tube process dry fluorine evaporation shell process steam condensation, and the vertical structure mainly adopts the design of shell process full-liquid fluorine evaporation pipe process steam condensation. In recent years, the single machine load of the low-temperature evaporation heat pump system is getting larger and larger, and there also appears a high-energy-efficiency low-temperature evaporation heat pump system using magnetic suspension or gas suspension centrifugal oil-free compressor. The existing horizontal steam condenser has the problem of fluorine system starting with liquid, which is not conducive to the reliable operation of the centrifugal compressor. The existing vertical steam condenser has the problems of low heat exchange efficiency, too high height of the vertical steam condenser of large load unit, inconvenient transportation and installation, too large fluorine charge quantity and the like. The existing steam condenser has been unable to meet the latest development of the low-temperature evaporation heat pump system, and how to make the steam condenser have higher heat transfer performance, more compact structure, lower cost and easier installation and maintenance is a technical problem urgently to be solved in this field. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at providing a horizontal shell process falling film type fluorine evaporation pipe process steam condenser, which can realize compact structure, low cost, higher heat exchange efficiency and avoid steam being discharged without condensation.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0005] The utility model provides a horizontal shell course falling film fluorine evaporation pipe course steam condenser, including cylinder, the both ends of cylinder are connected with first tube plate and second tube plate respectively, a plurality of inside and outside reinforced high -efficient heat exchange tubes are fixedly connected between first tube plate and second tube plate, and a plurality of inside and outside reinforced high -efficient heat exchange tubes are in parallel and run through the inside of cylinder, two falling film distributor end sealing plates are fixedly connected on the inner wall top of cylinder, and falling film distributor assembly is fixedly installed between two falling film distributor end sealing plates, the side surface of cylinder is provided with mounting hole, and fluorine working medium inlet is fixedly installed in the inside of mounting hole, one end of fluorine working medium inlet is communicated with the inside of falling film distributor assembly, and the top of cylinder outer surface is fixedly connected with fluorine working medium outlet.
[0006] By adopting the above technical scheme, the liquid fluorine working medium can be evenly sprinkled on the outer surface of the inside and outside reinforced high-efficiency heat exchange pipe, and the heat exchange stability is ensured.
[0007] Further, one end of the cylinder is fixedly installed with a first tube box end cover assembly, one end of the first tube box end cover assembly is fixedly connected with a first end cover flange, the first end cover flange is fixed to the cylinder through bolts, and a first end cover gasket is installed at the connection between the first end cover flange and the cylinder.
[0008] By adopting the above technical scheme, it is ensured that the device can work stably.
[0009] Further, a tube box partition rib is fixedly connected to the inner wall of the first tube box end cover assembly, the inner side of the first tube box end cover assembly is divided into two independent spaces by the tube box partition rib, a steam inlet pipe and a condensate outlet pipe are fixedly connected to the outer surface of the first tube box end cover assembly, the steam inlet pipe and the condensate outlet pipe are respectively communicated with the two independent spaces, and a sight glass is fixedly installed on the outer surface of the first tube box end cover assembly.
[0010] By adopting the above technical scheme, it is ensured that the steam can effectively pass through the inside of the inside and outside reinforced high-efficiency heat exchange pipe.
[0011] Further, the plurality of inside and outside reinforced high-efficiency heat exchange pipes are divided into two groups, one end of the two groups of inside and outside reinforced high-efficiency heat exchange pipes respectively corresponds to the two independent spaces in the inside of the first tube box end cover assembly, a support plate is fixedly connected to the middle position in the inside of the cylinder, and the inside and outside reinforced high-efficiency heat exchange pipes penetrate through the through holes on the outer surface of the support plate.
[0012] By adopting the above technical scheme, the inside of the device can perform double condensation operation.
[0013] Further, one end of the cylinder body is provided with a second tube box end cover assembly, one end of the second tube box end cover assembly is fixedly connected with a second end cover flange, the second end cover flange is fixedly connected with the cylinder body through bolts, and a second end cover sealing gasket is arranged between the second end cover flange and the cylinder body.
[0014] By adopting the technical scheme, stable work of the device is ensured.
[0015] Further, the bottom of the outer surface of the cylinder body is fixedly connected with two supports, the side surface of the cylinder body is fixedly connected with a liquid level sleeve assembly, and the upper end of the liquid level sleeve assembly is fixedly provided with an electronic liquid level meter.
[0016] By adopting the technical scheme, stable support of the whole device is ensured, and the internal liquid fluorine working medium can be controlled and operated.
[0017] To sum up, the beneficial technical effects of the utility model are as follows:
[0018] 1. The falling film distributor assembly arranged at the inner top end of the cylinder body can uniformly distribute the liquid fluorine working medium and reduce the charging amount of the refrigerant.
[0019] 2. The plurality of inner-outer reinforced high-efficiency heat exchange pipes are divided into two groups, the number of the inner-outer reinforced high-efficiency heat exchange pipes in the upper group is more than three fourths of the total number, and the number of the inner-outer reinforced high-efficiency heat exchange pipes in the lower group is less than one fourth of the total number. The inner-outer reinforced high-efficiency heat exchange pipes in the upper group can perform falling film evaporation operation, and the inner-outer reinforced high-efficiency heat exchange pipes in the lower group can be immersed in the liquid fluorine working medium and perform full-liquid evaporation operation. The liquid fluorine working medium can be controlled and operated through the liquid level sleeve assembly and the electronic liquid level meter, and the two-flow design can make the second flow perform liquid sealing to avoid the steam being extracted from the condenser without being condensed.
[0020] 3. The horizontal shell-side falling film evaporation mode can improve the heat transfer efficiency and avoid liquid entrainment of the refrigerant gas, which is beneficial to the reliable operation of the centrifugal compressor. The horizontal structure is more compact, has lower cost and is easier to install and maintain. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a front view of the utility model;
[0022] Figure 2 It is a side view of the utility model;
[0023] Figure 3 It is a side view of the utility model Figure 1A-A section view of the device.
[0024] Figure: 1, the first tube side end cover assembly; 101, steam inlet pipe; 102, tube side partition; 103, condensate outlet pipe; 104, first end cover flange; 105, sight glass; 2, first end cover gasket; 3, first tube plate; 4, falling film distributor end plate; 5, fluorine working medium outlet; 6, cylinder; 7, falling film distributor assembly; 8, fluorine working medium inlet; 9, second tube plate; 10, second tube side end cover assembly; 1001, second end cover flange; 11, second end cover gasket; 12, support; 13, support plate; 14, inner and outer reinforced high-efficiency heat exchange tube; 15, liquid level sleeve assembly; 16, electronic liquid level meter. DETAILED DESCRIPTION
[0025] The method of the present application will be further described in detail below with reference to the accompanying drawings.
[0026] Referring to Figure 1 , Figure 3 A horizontal shell side falling film fluorine evaporation tube side steam condenser, comprising a cylinder 6, the two ends of the cylinder 6 are fixedly connected with a first tube plate 3 and a second tube plate 9, a plurality of inner and outer reinforced high-efficiency heat exchange tubes 14 are fixedly connected between the first tube plate 3 and the second tube plate 9, and the plurality of inner and outer reinforced high-efficiency heat exchange tubes 14 are arranged side by side and penetrate the inside of the cylinder 6, two falling film distributor end plates 4 are fixedly connected to the top of the inner wall of the cylinder 6, a falling film distributor assembly 7 is fixedly installed between the two falling film distributor end plates 4, a mounting hole is arranged on the side surface of the cylinder 6, and a fluorine working medium inlet 8 is fixedly installed in the inside of the mounting hole, one end of the fluorine working medium inlet 8 is communicated with the inside of the falling film distributor assembly 7, and a fluorine working medium outlet 5 is fixedly connected to the top of the outer surface of the cylinder 6, wherein the falling film distributor assembly 7 is arranged at the top end of the inside of the cylinder 6, which can uniformly distribute the liquid fluorine working medium and reduce the charging amount of the refrigerant; the falling film distribution liquid supply mode can avoid the upper heat exchange tube of the traditional full-liquid evaporation mode from not contacting the refrigerant, so that the steam is not condensed and is extracted from the condenser.
[0027] Referring to Figure 1 , Figure 2 , Figure 3The first tube box end cover assembly 1 is fixedly installed at one end of the cylinder body 6, one end of the first tube box end cover assembly 1 is fixedly connected with a first end cover flange 104, the first end cover flange 104 is fixed with the cylinder body 6 through bolts, a first end cover gasket 2 is installed at the connection between the first end cover flange 104 and the cylinder body 6, a tube box partition rib 102 is fixedly connected to the inner wall of the first tube box end cover assembly 1, the inner side of the first tube box end cover assembly 1 is divided into two independent spaces by the tube box partition rib 102, a steam inlet pipe 101 and a condensate outlet pipe 103 are fixedly connected to the outer surface of the first tube box end cover assembly 1, the steam inlet pipe 101 and the condensate outlet pipe 103 are communicated with the two independent spaces respectively, a sight glass 105 is fixedly installed on the outer surface of the first tube box end cover assembly 1, a plurality of inner-outer reinforced high-efficiency heat exchange pipes 14 are divided into two groups, and one end of the two groups of inner-outer reinforced high-efficiency heat exchange pipes 14 corresponds to the two independent spaces inside the first tube box end cover assembly 1 respectively, a support plate 13 is fixedly connected to the middle position inside the cylinder body 6, the inner-outer reinforced high-efficiency heat exchange pipes 14 penetrate through the through holes on the outer surface of the support plate 13, two supports 12 are fixedly connected to the bottom of the outer surface of the cylinder body 6, a liquid level sleeve assembly 15 is fixedly connected to the side surface of the cylinder body 6, and an electronic liquid level meter 16 is fixedly installed at the upper end of the liquid level sleeve assembly 15.
[0028] Referring to FIG. 1, the second tube box end cover assembly 10 is installed at one end of the cylinder body 6, one end of the second tube box end cover assembly 10 is fixedly connected with a second end cover flange 1001, the second end cover flange 1001 is fixedly connected with the cylinder body 6 through bolts, and a second end cover gasket 11 is installed between the second end cover flange 1001 and the cylinder body 6, wherein the second tube box end cover assembly 10 can be sealingly connected with the cylinder body 6, and the steam and the condensed water can flow stably and effectively.
[0029] Working principle: in use, first, the device is installed at the designated location, then the liquid fluorine is introduced from the fluorine working fluid inlet 8, the liquid fluorine enters the inside of the falling film distributor assembly 7, and is then uniformly sprayed on the outer surface of the upper internal and external reinforced high-efficiency heat exchange pipe 14, and then collected at the bottom end of the inside of the barrel 6, so that the lower internal and external reinforced high-efficiency heat exchange pipe 14 is immersed in the liquid fluorine, at this time, high-temperature steam is introduced from the steam inlet pipe 101 into a separate space in the inside of the first tube box end cover assembly 1, the high-temperature steam flows along the upper internal and external reinforced high-efficiency heat exchange pipe 14, at this time, falling film evaporation can be obtained, and part of the steam can flow into the inside of the second tube box end cover assembly 10, and then flow into the lower internal and external reinforced high-efficiency heat exchange pipe 14, since the lower internal and external reinforced high-efficiency heat exchange pipe 14 is immersed in the liquid fluorine, full liquid evaporation operation can be carried out at this time, and finally the condensed water flows into another separate space in the inside of the first tube box end cover assembly 1, and then is discharged from the condensed water outlet pipe 103, in the process, the evaporated fluorine is discharged from the fluorine working fluid outlet 5, and in the whole process, the liquid fluorine working fluid is controlled and operated by the liquid level sleeve assembly 15 and the electronic liquid level meter 16.
[0030] The real-time examples of the specific embodiment are the preferred examples of the utility model, and do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.
Claims
1. A horizontal shell-side falling film fluorine evaporator with tube-side steam condenser, comprising a shell (6), characterized in that: The two ends of the cylinder (6) are respectively fixedly connected to a first tube sheet (3) and a second tube sheet (9). Multiple internal and external enhanced high-efficiency heat exchange tubes (14) are fixedly connected between the first tube sheet (3) and the second tube sheet (9), and the multiple internal and external enhanced high-efficiency heat exchange tubes (14) run parallel through the interior of the cylinder (6). Two falling film distributor end sealing plates (4) are fixedly connected to the top of the inner wall of the cylinder (6). A falling film distributor assembly (7) is fixedly installed between the two falling film distributor end sealing plates (4). An installation hole is provided on the side surface of the cylinder (6), and a fluorine working fluid inlet (8) is fixedly installed inside the installation hole. One end of the fluorine working fluid inlet (8) communicates with the interior of the falling film distributor assembly (7). A fluorine working fluid outlet (5) is fixedly connected to the top of the outer surface of the cylinder (6).
2. A horizontal shell-side falling film fluorine evaporator with tube-side steam condenser according to claim 1, characterized in that: A first pipe box end cap assembly (1) is fixedly installed at one end of the cylinder (6). A first end cap flange (104) is fixedly connected to one end of the first pipe box end cap assembly (1). The first end cap flange (104) is fixed to the cylinder (6) by bolts. A first end cap sealing gasket (2) is installed at the connection between the first end cap flange (104) and the cylinder (6).
3. A horizontal shell-side falling film fluorine evaporator with tube side steam condensation according to claim 2, characterized in that: A pipe box partition rib (102) is fixedly connected to the inner wall of the first pipe box end cap assembly (1). The inner side of the first pipe box end cap assembly (1) is divided into two independent spaces by the pipe box partition rib (102). A steam inlet pipe (101) and a condensate outlet pipe (103) are fixedly connected to the outer surface of the first pipe box end cap assembly (1). The steam inlet pipe (101) and the condensate outlet pipe (103) are respectively connected to the two independent spaces. A sight glass (105) is fixedly installed on the outer surface of the first pipe box end cap assembly (1).
4. A horizontal shell-side falling film fluorine evaporator with tube side steam condenser according to claim 3, characterized in that: The multiple internally and externally reinforced high-efficiency heat exchange tubes (14) are divided into two groups, and one end of each group of internally and externally reinforced high-efficiency heat exchange tubes (14) corresponds to two independent spaces inside the first tube box end cap assembly (1). A support plate (13) is fixedly connected to the middle position inside the cylinder (6), and the internally and externally reinforced high-efficiency heat exchange tubes (14) pass through the through holes on the outer surface of the support plate (13).
5. A horizontal shell-side falling film fluorine evaporator with tube side steam condenser according to claim 1, characterized in that: A second pipe box end cap assembly (10) is installed at one end of the cylinder (6). A second end cap flange (1001) is fixedly connected to one end of the second pipe box end cap assembly (10). The second end cap flange (1001) is fixedly connected to the cylinder (6) by bolts. A second end cap sealing gasket (11) is installed between the second end cap flange (1001) and the cylinder (6).
6. A horizontal shell-side falling film fluorine evaporator with tube side steam condenser according to claim 1, characterized in that: Two supports (12) are fixedly connected to the bottom of the outer surface of the cylinder (6), and a liquid level sleeve assembly (15) is fixedly connected to the side surface of the cylinder (6). An electronic liquid level gauge (16) is fixedly installed at the upper end of the liquid level sleeve assembly (15).