Compressed air heat exchange device

Abstract

The utility model discloses a compressed air heat exchange device, and relates to the technical field of dryers. Comprising two sets of device bodies, each set of device body comprises a waste heat drying cavity, and the four sets of side faces of each waste heat drying cavity are fixedly connected with a high-temperature gas inlet pipe, a medium-temperature gas outlet pipe, a low-temperature moisture inlet pipe and a dry gas outlet pipe correspondingly; a filter screen device is arranged in the high-temperature gas inlet pipe; a driving motor is embedded in the waste heat drying cavity, a rotating shaft of the driving motor is connected with a pipeline switching gear block in the waste heat drying cavity, a communicating pipe is arranged on the inner side of the pipeline switching gear block, a porous adsorption material is arranged in the communicating pipe, and the driving motor drives the pipeline switching gear block to rotate, so that the position of the communicating pipe is controlled; connection switching among different pipelines is realized; the medium-temperature gas outflow pipe is connected with the compressed gas cooling mechanism, and the low-temperature moisture inlet pipe and the gas cooling mechanism between the two sets of device bodies are in cross connection. According to the utility model, solid dust in original compressed air can be effectively removed before heat exchange.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dryer technical field especially relates to a compressed air heat exchange device. BACKGROUND

[0002] The compressed air heat exchange device is used for realizing heat exchange between compressed air and other medium, can efficiently control the temperature of compressed air, guarantees stable operation, has compact structure and good heat transfer performance, is widely used in industrial manufacturing, energy and other fields, and helps system energy saving and efficiency improvement.

[0003] However, the existing compressed air heat exchange often lacks initial gas solid dust filtering, cannot effectively remove solid dust in original compressed air, thereby easily making dust enter the subsequent system, especially the surface of adsorption material, seriously affects normal operation and service life of the whole system, and therefore provides a compressed air heat exchange device to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the above-mentioned defects, and provides a compressed air heat exchange device, which can effectively remove solid dust in original compressed air before heat exchange, and solves the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme.

[0006] A compressed air heat exchange device comprises two sets of device bodies, each device body comprises a waste heat drying cavity, four sides of the waste heat drying cavity are fixedly connected with a high-temperature gas inlet pipe, a medium-temperature gas outlet pipe, a low-temperature moisture inlet pipe and a dry gas outlet pipe respectively, a filter screen device is arranged in the high-temperature gas inlet pipe, a driving motor is embedded in the waste heat drying cavity, a rotating shaft of the driving motor is connected with a pipeline switching block in the waste heat drying cavity, a communication pipe is arranged in the inner side of the pipeline switching block, a porous adsorption material is arranged in the communication pipe, the driving motor drives the pipeline switching block to rotate, thereby controlling the position of the communication pipe and realizing connection switching between different pipes, and the medium-temperature gas outlet pipe is connected with a compressed gas cooling mechanism.

[0007] The low-temperature moisture inlet pipe and the compressed gas cooling mechanism are cross-connected between the two sets of device bodies.

[0008] The outer end of the high-temperature gas inlet pipe, the medium-temperature gas outlet pipe, the low-temperature moisture inlet pipe and the dry gas outlet pipe is provided with a flange with a first fixed through hole.

[0009] Further, the high-temperature gas inlet pipe, the medium-temperature gas outlet pipe, the low-temperature wet gas inlet pipe and the dry gas outlet pipe are provided with fixed clamping rings on the outer flanges, the fixed clamping rings are provided with second fixed through holes corresponding to the first fixed through holes, and the second fixed through holes are provided with fixed threaded rods.

[0010] Further, the filter screen device comprises a filter screen fixing frame and a polyester fiber filter screen, and the polyester fiber filter screen is arranged on the inner side of the filter screen fixing frame.

[0011] Further, a plurality of air permeable holes are arranged on the lower side of the filter screen fixing frame, and a plurality of through holes corresponding to the first fixed through holes are arranged on the side of the filter screen fixing frame and fixed in the high-temperature gas inlet pipe through the fixed clamping rings.

[0012] Further, the compressed gas cooling mechanism comprises a fixed shell, an air inlet pipe is fixed on the upper side of the fixed shell, one end of the air inlet pipe is connected to a cooling elbow pipe fixed in the shell, the other end of the cooling elbow pipe is connected to the air inlet end of a gas pump fixed on the outer side of the shell, and the air outlet end of the gas pump is connected to the low-temperature wet gas inlet pipe through an air outlet pipe.

[0013] Further, four groups of cooling fans are arranged on one side of the fixed shell, and a plurality of air inlet holes are arranged on the other side of the fixed shell.

[0014] Further, the inner diameter of the communication pipe is the same as the inner diameters of the high-temperature gas inlet pipe, the medium-temperature gas outlet pipe, the low-temperature wet gas inlet pipe and the dry gas outlet pipe, and when the pipe switching block rotates along the rotating shaft of the driving motor, the communication pipe can be completely attached to and communicated with the interiors of the groups of pipes.

[0015] Further, the outer contour of the pipe switching block is in the form of an arc and attached to the waste heat drying cavity.

[0016] Further, the air inlet pipe is communicated with the medium-temperature gas outlet pipe through the fixed clamping rings at corresponding positions, and the air outlet pipe is communicated with the low-temperature wet gas inlet pipe through the fixed clamping rings at corresponding positions.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The utility model discloses a primary regeneration of porous adsorption material is realized, the waste heat in the high temperature compressed moisture of compressor is fully utilized, the utilization efficiency of energy is improved, and the operation cost is reduced.

[0019] 2. The utility model discloses a polyester fiber filter screen can effectively remove the solid dust in the original compressed air, prevent the dust from entering the subsequent system, avoid the pollution and damage of porous adsorption material and other components, simultaneously, the porous adsorption material in the communicating pipe in the waste heat drying cavity can adsorb or desorb the moisture in the gas, realize the drying of the gas, provide clean and dry compressed air for subsequent use, satisfy the quality requirement of compressed air of different industrial application scenes.

[0020] 3. The utility model discloses a driving motor drives the rotation of pipeline switching stopper, through the design that the inner diameter of communicating pipe is same with the inner diameter of each pipeline and can be completely attached and communicated, the accurate connection switching between different pipelines is realized, this makes the device can flexibly adjust the flow path of gas according to different working stages, ensure that the gas can flow smoothly and orderly in the waste heat drying cavity in different processing stages, improve the adaptability and reliability of the whole device to different state gas processing. ACCURATE CONNECTION SWITCHING BETWEEN DIFFERENT PIPELINES IS REALIZED

[0021] Figure 1 It is the overall structure schematic drawing of the utility model;

[0022] Figure 2 It is the internal structure schematic drawing of the waste heat drying cavity in the utility model;

[0023] Figure 3 It is the structure schematic drawing of driving motor in the utility model;

[0024] Figure 4 It is the structure schematic drawing of compressed gas cooling mechanism in the utility model.

[0025] In the figure: 1, the remaining heat drying cavity; 2, high-temperature gas into the pipe; 3, the medium-temperature gas outflow pipe; 4, low-temperature wet gas into the pipe; 5, dry gas outflow pipe; 6, the first fixed hole; 7, fixed clamping ring; 8, the second fixed hole; 9, fixed threaded rod; 10, filter screen fixed frame; 11, polyester fiber filter screen; 12, drive motor; 13, pipeline switching block; 14, communication pipe; 15, porous adsorbent material; 17, compressed gas cooling mechanism; 171, fixed shell; 172, gas inlet pipe; 173, gas outlet pipe; 174, cooling elbow; 175, cooling fan; 176, air inlet hole; 177, air pump. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the present application.

[0028] Reference Figures 1 to 4The utility model discloses a compressed air heat exchange device, including two groups of device body, and each device body includes waste heat drying cavity 1, and the four groups of side of waste heat drying cavity 1 are fixedly connected with high temperature gas inlet pipe 2, medium temperature gas outflow pipe 3, low temperature humidity inlet pipe 4 and dry gas outflow pipe 5 respectively. The filter screen device is arranged in the high temperature gas inlet pipe 2, and the filter screen device includes a filter screen fixed frame 10 and polyester fiber filter screen 11. The outer end of the high temperature gas inlet pipe 2, medium temperature gas outflow pipe 3, low temperature humidity inlet pipe 4 and dry gas outflow pipe 5 is provided with a flange with a first fixed hole 6. The outer end flange of the high temperature gas inlet pipe 2, medium temperature gas outflow pipe 3, low temperature humidity inlet pipe 4 and dry gas outflow pipe 5 is provided with a clamping ring 7, a second fixed hole 8 corresponding to the first fixed hole 6 is formed in the fixed clamping ring 7, and a fixed threaded rod 9 is arranged between the second fixed hole 8 and the first fixed hole 6.

[0029] Among them, the filter screen fixed frame 10 is arranged in the high temperature gas inlet pipe 2, the polyester fiber filter screen 11 is arranged on the inner side of the filter screen fixed frame 10, the driving motor 12 is embedded in the waste heat drying cavity 1, the rotating shaft of the driving motor 12 is connected with the pipeline switching block 13 in the waste heat drying cavity 1, the communication pipe 14 is formed in the pipeline switching block 13, the porous adsorption material 15 is fixedly connected to the inner side of the communication pipe 14 and is used for absorbing moisture. The compressed gas cooling mechanism 17 is arranged below the medium temperature gas outflow pipe 3, the high temperature gas inlet pipe 2 is used for introducing the high temperature compressed humid gas generated by the compressor, the polyester fiber filter screen 11 is installed in the filter screen fixed frame 10 in the high temperature gas inlet pipe 2, can carry out preliminary filtration to the entering gas, removes the solid dust therein. The driving motor 12 drives the pipeline switching block 13 to rotate, thereby controlling the position of the communication pipe 14, realizing the connection switching between different pipes. The porous adsorption material 15 in the communication pipe 14 is used for drying the gas, that is, adsorbing or desorbing the moisture in the gas, to achieve the purpose of drying the air. The design of the fixed clamping ring 7 and the fixed threaded rod 9 is to facilitate the connection and fixation between the various pipes, ensure the sealing property and structural stability of the whole device, make the gas flow according to the predetermined process, and the waste heat drying cavity 1 is used as the core processing space of the whole process, provides a closed environment for the flow, filtration, drying and other operations of the gas.

[0030] The compressed gas cooling mechanism 17 comprises a fixed shell 171, an air inlet pipe 172 is fixedly connected above the fixed shell 171, and the air inlet pipe 172 is connected to a cooling elbow 174 in the fixed shell 171. An air pump 177 is fixedly connected outside the fixed shell 171, the air inlet end of the air pump 177 is connected to the cooling elbow 174, and the air outlet end of the air pump 177 is fixedly connected to an air outlet pipe 173. Four groups of cooling fans 175 are fixedly connected to one side of the fixed shell 171, and a plurality of air inlet holes 176 are formed on the other side of the fixed shell 171 for cooling air in the cooling elbow 174. In the compressed gas cooling mechanism 17, high-temperature or medium-temperature gas enters the cooling elbow 174 in the fixed shell 171 through the air inlet pipe 172, and the air pump 177 provides power for the flow of the gas, so that the gas flows in the cooling elbow 174. At the same time, the four groups of cooling fans 175 on one side of the fixed shell 171 continuously suck in cold air from the air inlet holes 176 and discharge the cold air through the cooling fans 175. These cold airs exchange heat with the gas in the cooling elbow 174 and take away the heat of the gas, thereby achieving the cooling of the gas in the cooling elbow 174. The cooled gas is finally discharged through the air outlet pipe 173, so as to reduce the temperature of the high-temperature or medium-temperature gas to the required low-temperature state. The cooling elbow 174 can be provided with corresponding drain holes or drainage structure for draining cooling water.

[0031] Here, the second fixed hole 8 and the first fixed hole 6 correspond in position and size, the fixed threaded rod 9 penetrates the second fixed hole 8 and the first fixed hole 6 and is threadedly connected with a matching nut, which facilitates connection with other pipe bodies. A plurality of air permeable holes are formed below the filter screen fixing frame 10, and a plurality of through holes corresponding to the first fixed hole 6 are formed on the side of the filter screen fixing frame 10, which can be stably fixed in the high-temperature gas inlet pipe 2 through the fixed clamping ring 7. When the high-temperature compressed wet gas enters the high-temperature gas inlet pipe 2, solid dust particles are blocked by the polyester fiber filter screen 11, and the gas can smoothly pass through the air permeable holes and continue to flow to the subsequent pipeline, thereby achieving preliminary filtration of the compressed air entering the device, preventing dust particles from entering the interior of the device and affecting the normal operation of the device, and avoiding pollution and blockage of the subsequent porous adsorbent material 15 by dust.

[0032] The inner diameter of the communication pipe 14 is the same as the inner diameter of the high-temperature gas inlet pipe 2, the medium-temperature gas outlet pipe 3, the low-temperature wet gas inlet pipe 4 and the dry gas outlet pipe 5, and when the pipe switching block 13 rotates along the rotating shaft of the driving motor 12, the communication pipe 14 can be completely matched with and communicated with the inside of each group of pipes, which ensures that the gas can flow along the predetermined route in different stages. The cooling elbow pipe 174 penetrates into the fixed shell 171 and is fixedly connected with the gas inlet pipe 172 of the gas pump 177. The gas inlet pipe 172 is communicated with the medium-temperature gas outlet pipe 3 through the fixed clamping ring 7 at the corresponding position. The gas outlet pipe 173 is communicated with the low-temperature wet gas inlet pipe 4 through the fixed clamping ring 7 at the corresponding position, specifically, the gas outlet pipe 173 in one device body is communicated with the low-temperature wet gas inlet pipe 4 on another device body, and the low-temperature wet gas inlet pipe 4 and the gas outlet pipe 173 of the compressed gas cooling mechanism 17 are cross-connected between the two device bodies. That is, one device body is used as the high-temperature gas inlet pipe 2 and the medium-temperature gas outlet pipe 3 are communicated, and the low-temperature wet gas inlet pipe 4 and the dry gas outlet pipe 5 are closed. After cooling, the low-temperature adsorption is carried out in another device body. At this time, the channel communication state of the device body is opposite. After the porous adsorption material 15 is adsorbed for a period of time, the channel is switched through the pipe switching block 13. The original low-temperature adsorption device body is switched to complete the impurity removal and high-temperature regeneration steps, and the other device body completes the low-temperature adsorption. The two device bodies can alternately and cooperatively complete the continuous impurity removal, high-temperature regeneration and low-temperature adsorption work, so that the efficiency is maximized. The dry gas outlet pipe can also be connected with an external dryer adsorption tank to ensure the production rhythm and process quality requirements.

[0033] The working principle of the utility model is: in the initial state, the driving motor 12 rotates the pipe switching block 13 to the state that the two ends of the communication pipe 14 are communicated with the high-temperature gas inlet pipe 2 and the medium-temperature gas outlet pipe 3 respectively, at this time, the whole device is in the state of preparing to receive the high-temperature compressed wet gas generated by the compressor.

[0034] The high-temperature compressed wet gas generated by the compressor first enters the device from the high-temperature gas inlet pipe 2. When the high-temperature compressed wet gas passes through the high-temperature gas inlet pipe 2, the gas first passes through the polyester fiber filter screen 11, the polyester fiber filter screen 11 is installed in the filter screen fixed frame 10, the filter screen fixed frame 10 is stably fixed in the inner side of the high-temperature gas inlet pipe 2 through the through hole in the side and the fixed clamping ring 7, a plurality of groups of air permeable holes below the filter screen fixed frame 10 allow the gas to pass through, and the polyester fiber filter screen 11 blocks the solid dust particles in the gas, realizing the preliminary filtration of the compressed air entering the device, preventing the dust particles from entering the inside of the device and ensuring the normal progress of the subsequent treatment.

[0035] The high-temperature compressed wet gas after the preliminary filtration continues to enter the communicating pipe 14, the communicating pipe 14 is filled with the porous adsorption material 15, and the heat of the high-temperature gas evaporates the water adsorbed in the porous adsorption material 15, so that the preliminary regeneration of the porous adsorption material 15 is achieved. The processed high-temperature gas flows out of the communicating pipe 14 and is discharged from the waste heat drying cavity 1 through the medium-temperature gas outlet pipe 3.

[0036] The high-temperature gas discharged from the medium-temperature gas outlet pipe 3 enters the cooling bend pipe 174 in the fixed shell 171 of the compressed gas cooling mechanism 17 through the gas inlet pipe 172. The gas pump 177 starts to work to provide power for the flow of the gas in the cooling bend pipe 174, so that the gas flows in the cooling bend pipe 174. At the same time, the four groups of cooling fans 175 on one side of the fixed shell 171 suck in cold air from the air inlet hole 176, and the cold air exchanges heat with the gas in the cooling bend pipe 174 to take away the heat of the gas and realize the cooling of the gas. Part of the water vapor is condensed into liquid water during the cooling process. The cooled gas is discharged from the compressed gas cooling mechanism 17 through the gas outlet pipe 173.

[0037] After the cooled gas is discharged through the gas outlet pipe 173, it enters the low-temperature wet gas inlet pipe 4 of the other device body through the connection of the fixed clamping ring 7, and then enters the waste heat drying cavity 1 of the other device body. Before this, the driving motors 12 of the two device bodies synchronously rotate the pipeline switching stopper 13, so that the two ends of the communicating pipe 14 in the one device body are communicated with the high-temperature gas inlet pipe 2 and the medium-temperature gas outlet pipe 3, and the two ends of the communicating pipe 14 in the other device body are communicated with the low-temperature wet gas inlet pipe 4 and the dry gas outlet pipe 5. In this way, the low-temperature wet gas entering the communicating pipe 14 in the one device body is adsorbed by the porous adsorption material 15 when passing through the porous adsorption material 15, so that further drying treatment is realized. The low-temperature gas after the sufficient drying treatment is discharged from the device through the dry gas outlet pipe 5, and finally dry low-temperature compressed air is obtained. The two device bodies realize continuous processing by simultaneously switching the pipeline switching stopper 13.

[0038] The device adopts a double-channel circulation mode, and the two device bodies realize continuous operation by alternately operating high-temperature and low-temperature processing: one is the high-temperature processing stage, and the high-temperature gas flows through the porous adsorption material 15 to complete the regeneration and synchronous dust removal; the other is the low-temperature processing stage, and the cooled gas returns to the device to be deeply dried by the porous adsorption material 15. The driving motor 12 switches the pipeline every 10 minutes with an error of 5 seconds. The two groups of channels work cooperatively. Industrial tests show that the single processing capacity reaches 330 Nm 3 / h under the design flow rate of 2000 Nm 3, complete matching compressor full output capacity, a car factory 72 hours continuous operation record has verified its stability. Gas pump 177 is two-stage centrifugal gas pump, single-stage pressure rise 0.2MPa;Gas processing capacity control based on Q=0.85x pipeline flow rate 12 meters per secondx single processing duration 600 seconds, theoretical calculation value is about 220Nm 3 , combined with high temperature processing phase duration limit in 8 to 10 minutes to guarantee material regeneration efficiency. In industrial applications, industrial-grade double screw gas pump can be used, with 500 to 2500Nm 3 / h flow range and 80% or more isentropic efficiency. Here, the porous adsorption material is composite molecular sieve, the composite molecular sieve is 93% at 200 DEG C desorption efficiency and 40 DEG C adsorption capacity is 18 grams of water per kilogram of material.

[0039] The above described, only for the preferred specific embodiments of the present application, but the scope of the present application is not limited to this, any skilled in the art of the technical range disclosed in the present application, according to the technical scheme of the present application and the utility model concept of the present application are equivalent to replace or change, should be covered within the scope of the present application.

Claims

1. A compressed air heat exchange device comprising two sets of device bodies, characterised in that: Each set of device body comprises a waste heat drying cavity (1), the waste heat drying cavity (1) four groups of side are fixedly connected with high temperature gas inlet pipe (2), medium temperature gas outlet pipe (3), low temperature wet gas inlet pipe (4) and drying gas outlet pipe (5) respectively;The filter screen device is provided in the high temperature gas inlet pipe (2);The waste heat drying cavity (1) is embedded with drive motor (12), the rotating shaft of drive motor (12) is connected with the pipe switching block (13) in the waste heat drying cavity (1), the inner side of pipe switching block (13) is provided with communication pipe (14), the communication pipe (14) is provided with porous adsorption material (15), the pipe switching block (13) is rotated by drive motor (12), thereby the position of communication pipe (14) is controlled, the connection switching between different pipes is realized;The medium temperature gas outlet pipe (3) is connected with compressed gas cooling mechanism (17); Wherein, the low temperature wet gas inlet pipe (4) and compressed gas cooling mechanism (17) between two sets of device body form cross connection.

2. A compressed air heat exchange device according to claim 1, characterised in that The outer end of high temperature gas inlet pipe (2), medium temperature gas outlet pipe (3), low temperature wet gas inlet pipe (4) and drying gas outlet pipe (5) is provided with flange with first fixed through hole (6).

3. A compressed air heat exchange device according to claim 2, characterised in that, The outer end flange of high temperature gas inlet pipe (2), medium temperature gas outlet pipe (3), low temperature wet gas inlet pipe (4) and drying gas outlet pipe (5) is provided with fixed clamp ring (7), the second fixed through hole (8) corresponding with first fixed through hole (6) is opened in fixed clamp ring (7), the second fixed through hole (8) is provided with fixed threaded rod (9).

4. A compressed air heat exchange device according to claim 1, wherein The filter screen device comprises filter screen fixed frame (10) and polyester fiber filter screen (11), the inner side of filter screen fixed frame (10) is provided with polyester fiber filter screen (11).

5. A compressed air heat exchange device according to claim 4, characterised in that The lower side of filter screen fixed frame (10) is provided with multiple groups of air holes, the side of filter screen fixed frame (10) is provided with multiple groups of through holes matched with first fixed through hole (6), and is fixed in high temperature gas inlet pipe (2) through fixed clamp ring (7).

6. A compressed air heat exchange device according to claim 1, wherein The compressed gas cooling mechanism (17) comprises fixed shell (171), the upper side of fixed shell (171) is fixed with gas inlet pipe (172), one end of gas inlet pipe (172) is connected with cooling elbow (174) fixed in shell (171);The other end of cooling elbow (174) is connected with the gas inlet end of gas pump (177) fixed outside shell (171), the gas outlet end of gas pump (177) is connected with low temperature wet gas inlet pipe (4) through gas outlet pipe (173).

7. A compressed air heat exchange device according to claim 6, characterised in that One side of fixed shell (171) is provided with four groups of cooling fans (175), the other side of fixed shell (171) is provided with multiple groups of air inlet holes (176).

8. A compressed air heat exchange device according to claim 1, wherein The inner diameter of communication pipe (14) is same with the inner diameter of high temperature gas inlet pipe (2), medium temperature gas outlet pipe (3), low temperature wet gas inlet pipe (4) and drying gas outlet pipe (5), when the pipe switching block (13) rotates along the rotating shaft of drive motor (12), the communication pipe (14) can be completely attached and communicated with the inside of each group of pipes.

9. A compressed air heat exchange device according to claim 8, characterised in that, The pipeline switching block (13) is circular arc type and is attached to the residual heat drying cavity (1).

10. A compressed air heat exchange device according to claim 6, wherein The gas inlet pipe (172) is communicated with the medium temperature gas outlet pipe (3) through the fixed clamping ring (7) at the corresponding position; the gas outlet pipe (173) is communicated with the low temperature wet gas inlet pipe (4) through the fixed clamping ring (7) at the corresponding position.

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