Straight-flow heat exchangerTechnical Field
The invention relates to the technical field of heat exchangers, in particular to a straight-flow type heat exchanger.
Background
The heat exchanger is energy-saving equipment for realizing heat transfer between two or more fluids with different temperatures, so that heat is transferred from fluid with higher temperature to fluid with lower temperature, and the temperature of the fluid reaches the index specified by the flow, thereby meeting the requirements of process conditions and being one of main equipment for improving the energy utilization rate. The heat exchanger plays an important role in chemical industry, petroleum, power, food and other industrial production, and can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, so that the heat exchanger has wide application range. The existing heat exchanger has some defects in the use process, such as low heat exchange efficiency, inconvenient fixed installation and the like, and can complete heat exchange only through repeated circulation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a straight-flow heat exchanger.
In order to solve the problems, the invention provides the following technical scheme: the utility model provides a straight-flow heat exchanger, includes the casing of pipeline structure, the casing level sets up, and the both ends of casing are equipped with first sealed lid and second respectively sealed lid, the casing with be equipped with first pipeline fixed plate between the first sealed lid, the casing with be equipped with the second pipeline fixed plate between the second sealed lid, first pipeline fixed plate with form inclosed first cavity between the first sealed lid, the second pipeline fixed plate with form inclosed second cavity between the second sealed lid, be equipped with a plurality of pipelines between first pipeline fixed plate and the second pipeline fixed plate, with first cavity and second cavity intercommunication through a plurality of pipelines, the upper portion of first sealed lid be equipped with the hot fluid import takeover of first cavity intercommunication, the lower part of second sealed lid be equipped with the hot fluid export takeover of second cavity intercommunication, the casing is inside to form inclosed third cavity between first pipeline fixed plate and the second pipeline fixed plate, the lower part of casing is close the one end of hot fluid export takeover is equipped with the cold fluid import takeover with the cold fluid of third cavity intercommunication, the upper portion of casing is close the one end of taking over is equipped with the cold fluid import takeover with the third cavity intercommunication.
Further, the edges of the two ends of the shell are provided with a circle of first flanges, the edges of the first sealing cover and the second sealing cover are provided with a circle of second flanges matched with the first flanges, and the first flanges and the second flanges are fixedly connected through the matching of bolts and nuts; a sealing ring is clamped between the first flange and the second flange.
Further, the axis of the shell is parallel to the horizontal plane, and two supports arranged at intervals are arranged below the shell.
Further, the end parts of the hot fluid inlet connecting pipe, the hot fluid outlet connecting pipe, the cold fluid inlet connecting pipe and the cold fluid outlet connecting pipe are respectively provided with an integrally formed flange plate.
Further, the outer circumference edge of the first pipeline fixing plate is clamped between the second flange of the first sealing cover and the first flange at the corresponding end of the shell, and a plurality of first mounting holes for bolts to pass through are formed in the outer circumference edge of the first pipeline fixing plate; the outer circumference edge of the second pipeline fixing plate is clamped between the second flange of the second sealing cover and the first flange of the corresponding end of the shell, and a plurality of second mounting holes for bolts to pass through are formed in the outer circumference edge of the second pipeline fixing plate.
Further, a plurality of baffle plates are arranged in the shell, the baffle plates are uniformly distributed along the axial direction of the shell, and the baffle plates are fixed on all pipelines.
Further, the shell is of a two-section structure, the shell comprises a first shell and a second shell, and the first shell is fastened and connected with the second shell through a clamp.
Further, a circle of connecting edges extending outwards are arranged at the adjacent ends of the first shell and the second shell, and the clamp is clamped on the connecting edges of the first shell and the second shell to fasten and connect the first shell and the second shell into a whole.
Further, three baffles are provided, one baffle is installed in the first shell, and the other two baffles are installed in the second shell.
Further, each baffle plate correspondingly arranged in the first shell and the second shell on the inner wall is provided with a circle of installation edge extending inwards, and the arc edges of the three baffle plates are fixed on the corresponding installation edges through bolt connection.
Compared with the prior art, the invention has the beneficial effects that: according to the direct-flow heat exchanger, heat fluid can enter the first cavity from the hot fluid inlet connecting pipe, then enters the second cavity through the pipelines, flows out of the hot fluid outlet connecting pipe, flows into the third cavity from the cold fluid inlet connecting pipe, flows out of the cold fluid outlet connecting pipe, flows in the third cavity and flows between gaps between the pipelines, and exchanges heat through heat conduction of the pipelines, and the flowing direction of the cold fluid is opposite to the flowing direction of the hot fluid, so that the direct-flow heat exchanger has higher heat exchange efficiency, and is reasonable in structural design, convenient to maintain and suitable for popularization and application.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic top view of an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of FIG. 3 at A;
FIG. 5 is an enlarged view of FIG. 3 at B;
FIG. 6 is an enlarged view of FIG. 3 at C;
FIG. 7 is a schematic view of a partial structure of the present invention;
Reference numerals illustrate: the cooling device comprises a shell 1, a cold fluid inlet connecting pipe 1a, a cold fluid outlet connecting pipe 1b, a first flange 1c, a first shell 1d, a second shell 1e, a first sealing cover 2, a hot fluid inlet connecting pipe 2a, a second sealing cover 3, a hot fluid outlet connecting pipe 3a, a first pipeline fixing plate 4, a first mounting hole 4a, a second pipeline fixing plate 5, a second mounting hole 5a, a first cavity 6, a second cavity 7, a pipeline 8, a third cavity 9, a second flange 10, a support 11, a flange plate 12, a baffle plate 13, a mounting edge 14 and a connecting edge 15.
Detailed Description
Specific embodiments of the invention are described in further detail below with reference to the drawings and examples.
Referring to fig. 1 to 7, a direct-flow heat exchanger is shown, including pipeline structure's casing 1, casing 1 level sets up, casing 1's both ends are equipped with first sealed lid 2 and second sealed lid 3 respectively, casing 1 with be equipped with first pipeline fixed plate 4 between the first sealed lid 2, casing 1 with be equipped with second pipeline fixed plate 5 between the second sealed lid 3, first pipeline fixed plate 4 with form airtight first cavity 6 between the first sealed lid 2, second pipeline fixed plate 5 with form airtight second cavity 7 between the second sealed lid 3, be equipped with a plurality of pipelines 8 between first pipeline fixed plate 4 and the second pipeline fixed plate 5, communicate first cavity 6 and second cavity 7 through a plurality of pipelines 8, the upper portion of first sealed lid 2 be equipped with first cavity 6 intercommunication's hot fluid inlet take over 2a, the lower part of second sealed lid 3 be equipped with second cavity 7 intercommunication's hot fluid export 3a, casing 1 inside is in first pipeline fixed plate 4 and second pipeline fixed plate 5 form airtight second cavity 7 between the cold fluid inlet 9 of casing 3a be equipped with the cold fluid inlet take over 9a near the cold fluid inlet of 3a of third pipeline fixed plate 1.
The hot fluid enters the first cavity 6 from the hot fluid inlet connecting pipe 2a, then enters the second cavity 7 through a plurality of pipelines 8, flows out of the hot fluid outlet connecting pipe 3a, flows into the third cavity 9 from the cold fluid inlet connecting pipe 1a, flows out of the cold fluid outlet connecting pipe 1b, flows in the third cavity 9 and flows between gaps between the pipelines 8 and 8, exchanges heat through heat conduction of the pipelines 8, and flows in the opposite direction to the flow direction of the hot fluid, so that the heat exchange efficiency is higher.
The edges of the two ends of the shell 1 are provided with a circle of first flange 1c, the edges of the first sealing cover 2 and the second sealing cover 3 are provided with a circle of second flange 10 matched with the first flange 1c, the first flange 1c and the second flange 10 are fixedly connected through the matching fastening of bolts and nuts, and the fixing and the installation are convenient; a seal ring is interposed between the first flange 1c and the second flange 10 to maintain sealability.
The axis of the shell 1 is parallel to the horizontal plane, and two supports 11 are arranged below the shell 1 at intervals.
The ends of the hot fluid inlet connecting pipe 2a, the hot fluid outlet connecting pipe 3a, the cold fluid inlet connecting pipe 1a and the cold fluid outlet connecting pipe 1b are respectively provided with an integrally formed flange 12 so as to be connected and fixed with an external water inlet pipe and an external water outlet pipe.
The outer circumference edge of the first pipeline fixing plate 4 is clamped between the second flange 10 of the first sealing cover 2 and the first flange 1c of the corresponding end of the shell 1, and a plurality of first mounting holes 4a for bolts to pass through are formed in the outer circumference edge of the first pipeline fixing plate 4; the outer circumference edge of the second pipeline fixing plate 5 is clamped between the second flange 10 of the second sealing cover 3 and the first flange 1c of the corresponding end of the shell 1, and a plurality of second mounting holes 5a for bolts to pass through are formed in the outer circumference edge of the second pipeline fixing plate 5; the first pipe fixing plate 4 and the second pipe fixing plate 5 are fixed while the first sealing cover 2 and the second sealing cover 3 are fixed.
A plurality of baffle plates 13 are arranged in the shell 1, the baffle plates 13 are uniformly distributed along the axial direction of the shell 1, the baffle plates 13 are fixed on all the pipelines 8, and the baffle plates 13 are used for changing the flow direction of cold fluid and improving the heat transfer effect.
In order to facilitate the installation of the baffle 13, the casing 1 is of a two-stage structure, the casing 1 comprises a first casing 1d and a second casing 1e, and the first casing 1d and the second casing 1e are connected through clamp fastening.
Adjacent ends of the first casing 1d and the second casing 1e are provided with a circle of connecting edges 15 extending outwards, and a clamp is clamped and fixed on the connecting edges 15 of the first casing 1d and the second casing 1e to fasten and connect the first casing 1d and the second casing 1e into a whole.
Three baffles 13 are arranged, one baffle 13 is arranged in the first shell 1d, and the other two baffles 13 are arranged in the second shell 1 e; the three baffles 13 are staggered to make the cold fluid flow direction wave-shaped, thereby improving the heat transfer effect.
The baffle plates 13 are fixed on all the pipelines 8, in order to avoid the baffle plates 13 being impacted by water flow and displaced along the pipelines 8, each baffle plate 13 correspondingly arranged in the first shell 1d and the second shell 1e is provided with a circle of inward extending installation edges 14, and the arc edges of the two baffle plates 13 are fixed on the corresponding installation edges 14 through bolt connection.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention are still within the scope of the technical solutions of the present invention.