Compact floating head type detachable steam generator for heat pump system

Abstract

The utility model discloses a compact floating head type detachable steam generator for a heat pump system, which relates to the technical field of heat pumps and aims to solve the problems of poor heat exchange performance of a coil pipe, large steam generation tank, high cost and difficulty in cleaning scale of the coil pipe of the tank in the existing design mode. A barrel flange is fixedly connected to one end of the outer side of the barrel, a first tube plate is installed on the outer side of the barrel flange, a barrel tail sealing plate is fixedly connected to the other end of the outer side of the barrel, a floating head tube box is installed on the side, close to the barrel tail sealing plate, of the interior of the barrel, and a second tube plate is fixedly connected to the outer side of the floating head tube box. A supporting plate is fixedly connected to the interior of the barrel, a supporting plate pull rod is fixedly connected to the interior of the supporting plate, and an internal and external reinforced efficient heat exchange pipe is installed in the position, between the first pipe plate and the second pipe plate, of the interior of the barrel. The effects of convenient dismounting and cleaning and low cost are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat pump technical field especially is related to a compact floating head formula detachable steam generator for heat pump system. 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 has become a more and more common application to realize water evaporation and condensate water collection. The steam generator in the low-temperature evaporation heat pump system generally adopts the design method of setting condensing coil in the steam generating tank body (the heat pump fluorine system circulating medium condenses and releases heat in the coil, and the solution absorbs heat and evaporates outside the coil). The existing design method has the problems of poor heat exchange performance of the coil, large steam generating tank body, high cost, and difficult cleaning of the tank body coil. In addition, in the field of industrial waste heat utilization, the application of high-temperature heat pump to produce steam is more and more widely used. Generally, high-temperature hot water is produced through the condenser of high-temperature heat pump unit (the heat pump fluorine system circulating medium condenses and releases heat outside the heat exchange pipe, and water absorbs heat and rises in temperature inside the heat exchange pipe), and then the high-temperature hot water is throttled and flashed to produce steam. This technical scheme needs to configure a circulating pump, a throttling device and a flash tank to form a steam generator, but this technical scheme has the disadvantages of complex system, high energy consumption and high cost. Therefore, how to make the steam generator more efficient, more compact, lower in cost and easier to maintain is a technical problem that needs to be solved in this field. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a compact floating head formula detachable steam generator for heat pump system.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A compact floating head formula detachable steam generator for heat pump system, comprising a cylinder body, one end of the outer side of the cylinder body is fixedly connected with a cylinder body flange, the outer side of the cylinder body flange is installed with a first tube plate, the outer side of the first tube plate is installed with a tube box end cover, the other end of the outer side of the cylinder body is fixedly connected with a cylinder body tail sealing plate, the inside of the cylinder body is installed with a floating head tube box on one side close to the cylinder body tail sealing plate, the outer side of the floating head tube box is fixedly connected with a second tube plate, the inside of the cylinder body is fixedly connected with a support plate, the inside of the support plate is fixedly connected with a support plate pull rod, and the inside of the cylinder body is installed with an inside-outside reinforced high-efficiency heat exchange pipe between the first tube plate and the second tube plate.

[0006] By adopting the above technical solution, a cylindrical flange is added to one end of the outer side, along with a first tube sheet and a tube box end cap that can be connected to the cylindrical flange. This facilitates subsequent disassembly and installation, allows for use at any time, and makes it easy to disassemble the internal structure for cleaning and maintenance.

[0007] Furthermore, a connecting pipe is fixedly connected to the outer side of the cylinder, a gas collecting pipe is fixedly connected to the outer side of the connecting pipe, a steam outlet and an vent are fixedly connected to one side of the outer side of the gas collecting pipe, and identical gas collecting pipe end sealing plates are fixedly connected to both ends of the outer side of the gas collecting pipe.

[0008] By adopting the above technical solution, it is easier to exchange air with the inside of the cylinder, and it is easier to operate.

[0009] Furthermore, a circulating working fluid inlet and a circulating working fluid outlet are fixedly connected to one side of the outer side of the tube box end cover, and a tube box partition rib one and a tube box partition rib two are fixedly connected to the other side of the outer side of the tube box end cover. A tube box end cover sealing gasket is provided between the tube box end cover and the first tube sheet, and a cylinder flange sealing gasket is provided between the first tube sheet and the cylinder flange. The tube box end cover, the first tube sheet and the cylinder flange are detachably connected by bolts and nuts.

[0010] By adopting the above technical solution, a sealing gasket can be added between each detachable component to improve the sealing effect and facilitate disassembly and installation.

[0011] Furthermore, a liquid level gauge gas phase interface is fixedly connected to the outer side of the tail seal plate of the cylinder, a liquid level gauge liquid phase interface, a support, a liquid inlet and a discharge outlet are fixedly connected to one side of the outer side of the cylinder, and a floating head tube box partition is fixedly connected to the outer side of the floating head tube box.

[0012] By adopting the above technical solution, the tail end plate of the cylinder is a flat plate structure, which makes the shell side space smaller compared with the traditional elliptical head type, thus reducing the amount of liquid stored in the cylinder. The smaller amount of liquid stored in the cylinder can shorten the start-up time of the heat pump system and make it easier for the system to quickly reach the operating conditions.

[0013] Furthermore, the first tube sheet and the second tube sheet are respectively placed at both ends of the outer side of the inner and outer enhanced high-efficiency heat exchange tubes. The two ends of the outer side of the inner and outer enhanced high-efficiency heat exchange tubes are respectively expanded and welded to the first tube sheet and the second tube sheet. The connecting pipe is connected to the gas collecting pipe and the cylinder body respectively. The circulating working fluid inlet, circulating working fluid outlet, liquid level gauge gas phase interface, liquid level gauge liquid phase interface, liquid inlet and outlet are all connected to the interior of the cylinder body.

[0014] By adopting the above technical solution, it is easier to use and operate.

[0015] In summary, the beneficial technical effects of this utility model are as follows:

[0016] 1. The high-efficiency heat exchange tube with internal and external reinforcement can effectively improve the condensation heat transfer performance of the circulating working medium in the heat exchange tube and the evaporation heat transfer performance of the water or solution outside the tube compared with the traditional U-shaped light tube;

[0017] 2. The heat exchange tube and the tube plate are connected by welding and expansion, which is more conducive to the sealing reliability of operation under high temperature conditions compared with the expansion connection method;

[0018] 3. The floating head tube box is an integrated flat plate milling cavity structure, which is smaller and more compact compared with the traditional floating head tube box. The floating head tube box and the outer edge of the tube plate are sealed and connected by welding, which is easier to maintain the heat exchange core compared with the fixed tube plate type heat exchanger. The heat exchange core can be extracted and cleaned as a whole, and the use of heat exchange tubes is less under the same heat exchange capacity compared with the traditional U-shaped light tube heat exchanger, so that the heat exchanger structure is more compact and the cost is lower;

[0019] 4. The pipe arrangement space of the heat exchange tube occupies 2 / 3 of the inner space of the cylinder, and only 1 / 3 of the gas phase space is left. The height of the liquid level in the cylinder is controlled by a liquid level meter, and a plurality of communication pipes are arranged between the upper part of the cylinder and the gas collecting pipe. Compared with the traditional kettle type reboiler, a larger cylinder diameter is not required, the manufacturing cost is lower, the liquid storage amount in the cylinder is less, the tail sealing plate of the cylinder is a flat plate structure, and the shell space is smaller compared with the traditional oval head type, so that the liquid storage amount in the cylinder is less, and the liquid storage amount in the cylinder is less, which can make the heat pump system start-up time shorter, and be more conducive to the system to quickly reach the working condition. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a cross-sectional structure schematic of the utility model Figure 1 ;

[0021] Figure 2 is a left view structure schematic of the utility model

[0022] Figure 3 is a right view structure schematic of the utility model

[0023] Figure 4 is a cross-sectional structure schematic of the utility model Figure 2 .

[0024] In the figure, 1, tube box end cover; 2, first tube plate; 3, cylinder flange sealing pad; 4, cylinder flange; 5, cylinder; 6, gas collector; 7, steam outlet; 8, emptying port; 9, gas collector end sealing plate; 10, connecting pipe; 11, support plate; 12, support plate pull rod; 13, second tube plate; 14, cylinder tail sealing plate; 15, liquid level meter gas phase interface; 16, floating head tube box; 17, liquid level meter liquid phase interface; 18, inner and outer reinforced high-efficiency heat exchange pipe; 19, support; 20, liquid inlet; 21, discharge port; 22, tube box end cover sealing pad; 101, circulating working medium inlet; 102, circulating working medium outlet; 103, tube box split distance spacer one; 104, tube box split distance spacer two; 1601, floating head tube box split distance spacer. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail below in combination with the drawings.

[0026] REFERENCE Figures 1-4 A compact floating head type detachable steam generator for heat pump system, comprising a cylinder 5, one end of the outer side of the cylinder 5 is fixedly connected with a cylinder flange 4, the outer side of the cylinder flange 4 is installed with a first tube plate 2, the outer side of the first tube plate 2 is installed with a tube box end cover 1, the other end of the outer side of the cylinder 5 is fixedly connected with a cylinder tail sealing plate 14, the inside of the cylinder 5 is installed with a floating head tube box 16 near one side of the cylinder tail sealing plate 14, the outer side of the floating head tube box 16 is fixedly connected with a second tube plate 13, the inside of the cylinder 5 is fixedly connected with a support plate 11, the inside of the support plate 11 is fixedly connected with a support plate pull rod 12, the inside of the cylinder 5 is installed with an inner and outer reinforced high-efficiency heat exchange pipe 18 between the first tube plate 2 and the second tube plate 13, the outer side of the cylinder 5 is fixedly connected with a connecting pipe 10, the outer side of the connecting pipe 10 is fixedly connected with a gas collector 6, one side of the outer side of the gas collector 6 is fixedly connected with a steam outlet 7 and an emptying port 8, the outer side of the gas collector 6 is fixedly connected with the same gas collector end sealing plate 9 at both ends, the high-efficiency heat exchange pipe with inner and outer reinforcement is adopted, compared with the traditional U-shaped light pipe, the condensation heat transfer performance of the circulating working medium in the heat exchange pipe can be effectively improved, the evaporation heat transfer performance of the water or solution outside the pipe is improved, the heat exchange pipe and the tube plate adopt the connection mode of welding and expansion, compared with the expansion connection mode, it is more conducive to the sealing reliability of operation under high-temperature working condition, the floating head tube box 16 and the outer edge of the tube plate adopt the sealing connection of welding, compared with the fixed tube plate type heat exchanger, the heat exchange core is easier to maintain, and the heat exchange core can be extracted and cleaned as the U-shaped light pipe.

[0027] As Figures 1-4As shown, one side of the outer side of the tube box end cover 1 is fixedly connected with a circulating working medium inlet 101 and a circulating working medium outlet 102, the other side of the outer side of the tube box end cover 1 is fixedly connected with a tube box split distance rib 103 and a tube box split distance rib 104, the tube box end cover 1 and the first tube plate 2 are provided with a tube box end cover sealing gasket 22, the first tube plate 2 and the cylinder flange 4 are provided with a cylinder flange sealing gasket 3, the tube box end cover 1, the first tube plate 2 and the cylinder flange 4 are detachably connected through bolts and nuts, the outer side of the cylinder tail sealing plate 14 is fixedly connected with a liquid level meter gas phase interface 15, one side of the outer side of the cylinder 5 is fixedly connected with a liquid level meter liquid phase interface 17, a support 19, a liquid inlet 20 and a discharge port 21, the outer side of the floating head tube box 16 is fixedly connected with a floating head tube box split distance rib 1601, the first tube plate 2 and the second tube plate 13 are respectively arranged at two ends of the outer side of the inner and outer reinforced high-efficiency heat exchange pipe 18, the two ends of the outer side of the inner and outer reinforced high-efficiency heat exchange pipe 18 are respectively expanded and welded with the first tube plate 2 and the second tube plate 13, the communication pipe 10 is respectively communicated with the gas collecting pipe 6 and the cylinder 5, and the circulating working medium inlet 101, the circulating working medium outlet 102, the liquid level meter gas phase interface 15, the liquid level meter liquid phase interface 17, the liquid inlet 20 and the discharge port 21 are all communicated with the inside of the cylinder 5.

[0028] The implementation principle of the embodiment is that when the device needs to be cleaned in the later stage of use, the bolts are detached from the cylinder flange 4, the tube box end cover 1 and the first tube plate 2 are taken off one by one, then the whole heat exchange pipe structure inside is taken out, and then cleaning is started.

[0029] The embodiments of the specific embodiment are preferred embodiments 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 compact floating head removable evaporator for heat pump systems comprising a cylindrical shell (5) characterised in that: One end of the cylinder (5) is fixedly connected with a cylinder flange (4), the outer side of the cylinder flange (4) is installed with a first tube plate (2), the outer side of the first tube plate (2) is installed with a tube box end cover (1), the other end of the cylinder (5) is fixedly connected with a cylinder tail sealing plate (14), the inner side of the cylinder (5) is installed with a floating head tube box (16) near the cylinder tail sealing plate (14), the outer side of the floating head tube box (16) is fixedly connected with a second tube plate (13), the inner side of the cylinder (5) is fixedly connected with a support plate (11), the inner side of the support plate (11) is fixedly connected with a support plate pull rod (12), the inner side of the cylinder (5) is installed with an inner-outer reinforced high-efficiency heat exchange pipe (18) between the first tube plate (2) and the second tube plate (13).

2. The compact floating head removable evaporator for heat pump systems according to claim 1, characterized in that: The outer side of the cylinder (5) is fixedly connected with a connecting pipe (10), the outer side of the connecting pipe (10) is fixedly connected with a gas collecting pipe (6), one side of the outer side of the gas collecting pipe (6) is fixedly connected with a steam outlet (7) and a emptying port (8), both ends of the outer side of the gas collecting pipe (6) are fixedly connected with the same gas collecting pipe end sealing plate (9).

3. The compact floating head removable evaporator for heat pump systems according to claim 2, characterized in that: One side of the outer side of the tube box end cover (1) is fixedly connected with a circulating working medium inlet (101) and a circulating working medium outlet (102), the other side of the outer side of the tube box end cover (1) is fixedly connected with a tube box split distance separation rib one (103) and a tube box split distance separation rib two (104), a tube box end cover sealing gasket (22) is arranged between the tube box end cover (1) and the first tube plate (2), a cylinder flange sealing gasket (3) is arranged between the first tube plate (2) and the cylinder flange (4), and the tube box end cover (1), the first tube plate (2) and the cylinder flange (4) are detachably connected through bolts and nuts.

4. The compact floating head removable evaporator for heat pump systems according to claim 3, characterized in that: The outer side of the cylinder tail sealing plate (14) is fixedly connected with a liquid level meter gas phase interface (15), one side of the outer side of the cylinder (5) is fixedly connected with a liquid level meter liquid phase interface (17), a support (19), a liquid inlet (20) and a discharge port (21), and the outer side of the floating head tube box (16) is fixedly connected with a floating head tube box split distance separation rib (1601).

5. The compact floating head removable evaporator for heat pump systems according to claim 4, characterized in that: The first tube plate (2) and the second tube plate (13) are respectively arranged at both ends of the outer side of the inner-outer reinforced high-efficiency heat exchange pipe (18), both ends of the outer side of the inner-outer reinforced high-efficiency heat exchange pipe (18) are expanded and welded with the first tube plate (2) and the second tube plate (13), the connecting pipe (10) is connected with the gas collecting pipe (6) and the cylinder (5), and the circulating working medium inlet (101), the circulating working medium outlet (102), the liquid level meter gas phase interface (15), the liquid level meter liquid phase interface (17), the liquid inlet (20) and the discharge port (21) are all connected with the inner side of the cylinder (5).

Images