Plate heat exchanger

Abstract

The utility model relates to a plate heat exchanger, which comprises stacked sheets, an upper group of corrugated grooves and a lower group of corrugated grooves are arranged on the sheets, the two groups of corrugated grooves are in central symmetry, a plurality of ribs which are distributed in parallel are arranged in each group of corrugated grooves, and the ribs are not symmetrical about the central line of the sheets. A fixed pressing plate is arranged at the front end of the plate sheet, an upper guide rod and a lower guide rod are fixedly arranged at the top and the bottom of the fixed pressing plate respectively, and the other end of the upper guide rod is fixedly connected with the other end of the lower guide rod through a guide rod support. According to the plate heat exchanger, the corrugated grooves with two different angles are formed in the same plate sheet, various flow channel combinations can be obtained, diagonal flow directions can be formed, the flow speeds of cold media and hot media between the plates can be close or equal under the condition of a single flow path, the refrigeration and heat transfer energy efficiency is improved, and the heat exchange efficiency is improved. In addition, the working conditions of refrigeration and heat exchange between media with different flow rates and flow speeds of users are thoroughly solved, and time waste and energy loss are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to plate heat exchanger technical field, concretely is a plate heat exchanger. BACKGROUND

[0002] Plate heat exchanger is a kind of high-efficiency energy-saving heat exchange equipment, with high heat transfer efficiency, light weight, small footprint, easy to repair and many other points, mainly used in petroleum, chemical, beverage, pharmaceutical, urban central heating, light industry, textile, papermaking, oil, ship, metallurgy, power (including nuclear power plant) and offshore engineering and other fields.

[0003] Plate heat exchanger is stacked by a series of metal sheets with certain corrugated shape, thin rectangular channels are formed between various sheets, and heat exchange is carried out through the sheets;The corrugation between the sheets not only forms the channel, but also has pressure bearing and fixing effect.

[0004] The design of corrugation provides many support points for the sheet, thereby enhancing the strength of the sheet, also establishing high turbulence, improving heat exchange efficiency, and minimizing the possibility of fouling. Plate heat exchanger sheet corrugation has two angles: large angle and small angle, so urban central heating generally adopts large temperature difference and small flow of heat source, and small temperature difference and large flow of secondary circulating water strategy, the use of conventional plate heat exchanger cannot solve the flow difference of both sides, so the heat exchange efficiency is reduced under the condition of equal time, not only waste time, but also energy loss.

[0005] Therefore, at present, a plate heat exchanger which is convenient to install and operate and improves refrigeration heat transfer efficiency is urgently needed. SUMMARY

[0006] The utility model discloses a plate heat exchanger which is convenient to install and operate and improves refrigeration heat transfer efficiency.

[0007] The utility model discloses a plate heat exchanger which is convenient to install and operate and improves refrigeration heat transfer efficiency.

[0008] A plate heat exchanger, comprising stacked plates, the plates are provided with two groups of corrugated grooves, the two groups of corrugated grooves are centrally symmetric, each group of corrugated grooves is provided with a plurality of parallel distributed ribs, and the ribs are not symmetric about the center line of the plate, the front end of the plate is provided with a fixed compression plate, the top and bottom of the fixed compression plate are respectively provided with an upper guide rod and a lower guide rod, and the other end of the upper guide rod and the lower guide rod is fixedly connected through a guide rod support, the rear end of the plate is provided with a movable compression plate, and the plate and the movable compression plate are movably installed on the upper guide rod, and the fixed compression plate and the movable compression plate compress the plate and are fixed through fastening bolts.

[0009] Preferably, the ribs are corrugated, the included angle of the middle bending of the ribs is 115 degrees, and the included angles between the vertical center line of the plate and the left and right ribs are 80 degrees and 35 degrees respectively.

[0010] Preferably, the lower guide rod comprises a guide rod body, a first mounting hole is formed in the top of the two ends of the guide rod body, a sliding groove is formed in the bottom of the two ends of the guide rod body, a second mounting hole parallel to the first mounting hole is formed in the bottom of the sliding groove, a plug rod is inserted and mounted in the second mounting hole, a push piece is fixedly designed on the plug rod, the push piece is slidably connected with the sliding groove, and end plates are fixedly arranged at the two ends of the guide rod body.

[0011] Preferably, a spring is sleeved on the plug rod, one end of the spring abuts against the push piece, and the other end of the spring abuts against the groove bottom of the sliding groove.

[0012] Preferably, a round hole corresponding to the first mounting hole and the second mounting hole is formed in the end plate, and the plug rods at the two ends of the guide rod body pass through the end plate through the round hole and are respectively inserted and connected with the fixed pressing plates and the guide rod supports.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The utility model relates to a plate heat exchanger, two kinds of corrugated grooves with different angles are formed on the same plate, a plurality of flow channel combinations can be obtained, diagonal flow directions are formed, in the case of single flow process, the flow speeds of cold medium and hot medium between the plates are close or equal, refrigeration and heat exchange working conditions between media with unequal flow speeds are solved, and the waste of time and energy loss are avoided.

[0015] 2、The utility model relates to a plate heat exchanger, plug rods are arranged at the two ends of the lower guide rod, the plug rods pass through the end plates and are inserted and connected with the fixed pressing plates and the guide rod supports under the elastic force of springs, the lower guide rod is supported, the lower guide rod is prevented from falling off during installation, the installation of the lower guide rod is guided, and installation and operation are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the three-dimensional structure of the utility model plate heat exchanger.

[0017] Figure 2 It is a schematic view of the front structure of the utility model plate heat exchanger plate.

[0018] Figure 3 It is a schematic view of the local enlarged structure of the utility model plate heat exchanger plate.

[0019] Figure 4The utility model discloses a plate heat exchanger lower guide rod place's explosion structure schematic view.

[0020] Figure 5 The utility model discloses a plate heat exchanger lower guide rod place's explosion structure schematic view.

[0021] Wherein: sheet 1, corrugated groove 2, strip 2.1, fixed compression plate 3, movable compression plate 4, fastening bolt 5, upper guide rod 6, lower guide rod 7, guide rod main body 7.1, first mounting hole 7.2, sliding slot 7.3, second mounting hole 7.4, plug rod 7.5, paddle 7.6, spring 7.7, end plate 7.8, guide rod support 8. Specific implementation

[0022] See Figures 1 to 5 The utility model relates to a kind of plate heat exchanger, including the sheet 1 of stacking placement, sheet 1 is provided with two groups of corrugated grooves 2 up and down, and two groups of corrugated grooves 2 are centrosymmetric, every group of corrugated grooves 2 is provided with multiple parallel distribution's strip 2.1, and strip 2.1 is not about sheet 1 center line symmetry, strip 2.1 is corrugated, and the included angle of strip 2.1 middle bending is 115 degrees, and the included angle between the vertical center line of sheet 1 and left and right two sides strip 2.1 is 80 degrees and 35 degrees respectively, can obtain multiple flow passage combinations, form diagonal flow direction, in the case of single flow process, cold, hot medium can be made in board flow speed close or equal, not only improve refrigeration heat transfer energy efficiency, and thoroughly solve the refrigeration and heat exchange working condition between the medium of user's unequal flow speed, avoid the waste of time and energy loss.

[0023] The front end of sheet 1 is provided with fixed compression plate 3, the top and bottom of fixed compression plate 3 are fixedly provided with upper guide rod 6 and lower guide rod 7, and the other end of upper guide rod 6 and lower guide rod 7 is fixedly connected by guide rod support 8, lower guide rod 7 includes guide rod main body 7.1, the top of both ends of guide rod main body 7.1 is provided with first mounting hole 7.2, and the bottom of both ends is provided with sliding slot 7.3, the bottom of sliding slot 7.3 is provided with second mounting hole 7.4 parallel with first mounting hole 7.2, plug rod 7.5 is insertedly installed in second mounting hole 7.4, paddle 7.6 is fixedly designed on plug rod 7.5, and paddle 7.6 is slidably connected with sliding slot 7.3, sliding slot 7.3 plays a guiding role to paddle 7.6, spring 7.7 is sleeved and set on plug rod 7.5, and one end of spring 7.7 is in abutment with paddle 7.6, and the other end of spring 7.7 is in abutment with the groove bottom of sliding slot 7.3, spring 7.7 plays an elastic supporting role to plug rod 7.5, to prevent plug rod 7.5 from retracting automatically after extension.

[0024] Further, the both ends of the guide rod body 7.1 are fixedly provided with end plates 7.8, the end plates 7.8 are provided with circular holes corresponding to the first mounting hole 7.2 and the second mounting hole 7.4, and the insertion rods 7.5 at the both ends of the guide rod body 7.1 pass through the end plates 7.8 through the circular holes and are respectively connected with the fixed pressing plate 3 and the guide rod support 8, the insertion rods 7.5 pass through the end plates 7.8 and are connected with the fixed pressing plate 3 and the guide rod support 8 under the elastic force of the springs 7.7, and the insertion rods 7.5 are connected with the fixed pressing plate 3 and the guide rod support 8, which supports the lower guide rod 7, prevents the lower guide rod 7 from falling off during installation, and guides the installation of the lower guide rod 7, which is convenient for installation and operation.

[0025] The rear end of the plate piece 1 is provided with a movable pressing plate 4, and the plate piece 1 and the movable pressing plate 4 are movably installed on the upper guide rod 6, and the fixed pressing plate 3 and the movable pressing plate 4 press the plate piece 1 and are fixed through the fastening bolts 5.

[0026] The working principle of the plate heat exchanger is that: first, the upper guide rod 6 is connected with the fixed pressing plate 3, the guide rod support 8 is installed at one end of the upper guide rod 6, then the lower guide rod 7 is installed, when the lower guide rod 7 is installed, the push pieces 7.6 at the both ends of the lower guide rod 7 are pushed inward, the insertion rods 7.5 are retracted into the lower guide rod 7, then the lower guide rod 7 is placed between the fixed pressing plate 3 and the guide rod support 8, the push pieces 7.6 are loosened, the insertion rods 7.5 are popped out under the action of the springs 7.7, pass through the end plates 7.8 and are connected with the fixed pressing plate 3 and the guide rod support 8, the pre-fixing of the lower guide rod 7 is completed, then the fixing bolts of the lower guide rod 7 are inserted into the first mounting hole 7.2 to fix the lower guide rod 7.

[0027] In addition: It should be noted that the above specific embodiments are only an optimized scheme of the patent, and any changes or improvements made by the person skilled in the art according to the above concept are within the protection scope of the patent.

Claims

1. A plate heat exchanger, characterized in that: The system includes stacked plates (1), which are provided with two sets of corrugated grooves (2) and are centrally symmetrical. Each set of corrugated grooves (2) is provided with multiple parallel ribs (2.1), and the ribs (2.1) are not symmetrical about the center line of the plate (1). A fixed clamping plate (3) is provided at the front end of the plate (1). An upper guide rod (6) and a lower guide rod (7) are fixedly provided at the top and bottom of the fixed clamping plate (3), respectively. The other ends of the upper guide rod (6) and the lower guide rod (7) are fixedly connected by a guide rod bracket (8). A movable clamping plate (4) is provided at the rear end of the plate (1). The plate (1) and the movable clamping plate (4) are both movably installed on the upper guide rod (6). The fixed clamping plate (3) and the movable clamping plate (4) press the plate (1) together and fix it with fastening bolts (5).

2. A plate heat exchanger according to claim 1, characterized in that: The rib (2.1) is corrugated, and the angle at the bend in the middle of the rib (2.1) is 115 degrees. The angles between the vertical center line of the plate (1) and the ribs (2.1) on the left and right sides are 80 degrees and 35 degrees, respectively.

3. A plate heat exchanger according to claim 1, characterized in that: The lower guide rod (7) includes a guide rod body (7.1). The top of both ends of the guide rod body (7.1) is provided with a first mounting hole (7.2), and the bottom of both ends is provided with a sliding groove (7.3). The bottom of the sliding groove (7.3) is provided with a second mounting hole (7.4) parallel to the first mounting hole (7.2). A plug rod (7.5) is inserted into the second mounting hole (7.4). A paddle (7.6) is fixedly designed on the plug rod (7.5), and the paddle (7.6) is slidably connected to the sliding groove (7.3). End plates (7.8) are fixedly provided at both ends of the guide rod body (7.1).

4. A plate heat exchanger according to claim 3, characterized in that: A spring (7.7) is sleeved on the insert rod (7.5), and one end of the spring (7.7) abuts against the paddle (7.6), and the other end of the spring (7.7) abuts against the bottom of the groove (7.3).

5. A plate heat exchanger according to claim 3, characterized in that: The end plate (7.8) has a circular hole corresponding to the first mounting hole (7.2) and the second mounting hole (7.4), and the inserts (7.5) at both ends of the guide rod body (7.1) pass through the circular hole through the end plate (7.8) and are respectively inserted into the fixed clamping plate (3) and the guide rod bracket (8).

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