Explosion-proof porcelain top cover and condenser

Abstract

The explosion-proof porcelain top cover comprises a top plate, a bottom plate and a side plate, the top plate and the bottom plate are oppositely arranged, the side plate is connected with the top plate and the bottom plate, a heat exchange cavity is formed between the top plate and the bottom plate, a feeding channel is arranged between the top plate and the bottom plate, and the feeding channel comprises a feeding cylinder and a separator. The isolation piece is arranged between the feeding cylinder and the heat exchange cavity, and an isolation gap used for isolating the heat exchange cavity from the feeding channel is formed in the isolation piece. The separator is arranged on the outer wall of the feeding cylinder, and the two sides of the separator are respectively isolated from the feeding cylinder and the heat exchange cavity through the isolation gap formed in the separator, so that stress generated by filling heat exchange fluid into the heat exchange cavity cannot directly act on the inner wall of the feeding cylinder with an enamel coating; and enamel explosion is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to condenser technical field field, concretely relates to a kind of explosion-proof porcelain top cover and condenser. BACKGROUND

[0002] The reasons for carrying out the enamel process on the condensing sheet mainly include improving heat transfer capacity, enhancing corrosion resistance and increasing service life, which make the enamel sheet condenser have significant advantages in industrial applications. The existing condenser is provided by overlapping multiple condensing sheets, and the condensing sheets are connected by top plate, bottom plate and side plate, so that a cavity capable of being filled with refrigerant fluid is formed inside. The multiple condensing sheets are overlapped, and the flow channels for heat medium are formed between adjacent condensing sheets for heat exchange and cooling. The refrigerant fluid inside the condensing sheet flows alternately with the cold and hot fluids, conducts heat through the sheet, and realizes condensation.

[0003] When the existing enamel condenser is fed, the top cover at the top of the condenser receives hot medium fluid that has not started to cool, so that the top cover will experience rapid temperature changes during operation. For example, during the start-up and shutdown of the feeding equipment, the temperature at the feeding port of the top cover will rise or fall sharply. The top cover will experience rapid temperature changes during operation, which will generate thermal stress. Since the thermal expansion coefficient of porcelain material is relatively small, the porcelain layer may gradually crack under the repeated action of thermal stress, eventually leading to porcelain explosion. The feeding port of the top cover of the condenser, which is the first to receive uncooled hot medium fluid, has an inner wall treated with enamel. The generation of thermal stress will cause the inner wall of the feeding port to explode. SUMMARY

[0004] The utility model aims at solving the technical problem of porcelain explosion at the feeding port of the top cover of the condenser, and provides an explosion-proof porcelain top cover for a condenser, which can avoid the internal pressure of the top cover acting on the feeding port by setting a layer of isolation cavity at the feeding port. The main idea is as follows:

[0005] An explosion-proof porcelain top cover for a condenser, comprising a top plate, a bottom plate and a side plate, the top plate and the bottom plate are arranged opposite to each other, the side plate connects the top plate and the bottom plate, a heat exchange cavity is formed between the top plate and the bottom plate, a feeding channel is provided between the top plate and the bottom plate, the feeding channel comprises a feeding cylinder and a separation piece, the separation piece is arranged between the feeding cylinder and the heat exchange cavity, and a separation gap for separating the heat exchange cavity and the feeding channel is formed inside the separation piece. In this scheme, a separation piece is arranged on the outer wall of the feeding cylinder. The separation gap formed inside the separation piece separates the feeding cylinder and the heat exchange cavity on both sides of the separation piece, so that the stress generated by the heat exchange fluid filled in the heat exchange cavity does not directly act on the inner wall of the feeding cylinder with an enamel coating, and porcelain explosion is avoided.

[0006] Preferably, the spacer comprises an inner ring and an outer ring, the inner ring is coaxially arranged in the outer ring, and the inner ring and the outer ring form a ring-shaped isolation gap.

[0007] Preferably, the bottom plate is provided with a feeding through hole one, the inner diameter of the feeding through hole is smaller than the inner diameter of the inner ring, and the inner ring and the outer ring of the spacer are welded to the bottom plate. Since the bottom plate of the top cover needs to be in contact with the medium to be cooled entering the condenser for heat exchange, the bottom plate needs to be porcelainized. In order to protect the flatness of the porcelain coating, the inner ring and the outer ring of the spacer are directly welded to the bottom plate inside the heat exchange cavity.

[0008] The second aspect of the utility model is to solve the technical problem of poor installation strength caused by the isolation cavity arranged in the spacer. Preferably, the top plate is provided with a feeding through hole two, and the inner wall of the feeding through hole two is connected with the outer ring of the spacer. The top plate of the top cover is located outside the condenser and will not be in contact with the medium to be cooled, so it does not need to be porcelainized. The outer wall of the spacer is connected with the inner wall of the feeding through hole two.

[0009] Preferably, the spacer further comprises an annular end face arranged between the inner ring and the outer ring, and the annular end face is used to provide support for the isolation gap. In addition, the annular end face is used to connect the inner ring and the outer ring. The annular end face is arranged by welding the connecting end face between the inner ring and the outer ring. When the stress generated by the heat exchange fluid flowing in the heat exchange cavity is applied to the spacer, the connecting end face between the inner ring and the outer ring can provide support.

[0010] Preferably, the annular end face of the spacer is provided with an air hole for connecting the isolation cavity with the external environment. Alternatively, the annular end face of the spacer is provided with an air hole connected to an air pump, and the air pump blows low thermal conductivity gas into the isolation gap. The upper end face of the spacer faces the outside of the condenser, and the air hole connected to the outside air not only maintains the air pressure balance inside the spacer after receiving stress, but also can dissipate heat in time, so that the temperature in the isolation gap inside the spacer is maintained at a normal level for transition. The air hole connected to the air pump blows low thermal conductivity gas medium into the isolation gap, which hinders the transfer of heat.

[0011] Preferably, the feeding cylinder is arranged above the spacer, and the feeding cylinder is integrally formed with the inner ring of the spacer. In this scheme, the feeding cylinder and the inner ring are integrally formed. Since the inner ring and the top plate are not directly connected, the feeding cylinder does not need to be additionally installed, and the inner ring can directly extend outside the top plate to form the feeding cylinder, which can be directly used.

[0012] The third aspect of the utility model discloses a purpose is to solve the outer ring inner wall and outer wall welding cause weak wall thickness to lead to the risk of leakage of the roof to improve.Further, the outer ring extends to the outside of the roof, and the extended outer end of the outer ring is connected with the annular end face, and the annular end face is staggered between the roof.The outer ring extends to the outside of the roof, and the mounting position of the annular end face is also located outside the roof, and the inner wall and the outer wall of the outer ring are staggered in the welding position of the annular end face and the roof, not only avoid the weak point to maintain the strength, also avoid the local stress concentration, reduce the cracking risk, and the isolation gap is also set to the outside of the roof, so that the space of the isolation gap is enlarged, and the heat insulation effect of the isolation gap is improved.

[0013] Preferably, the feeding cylinder comprises a cambered surface part, and the cambered surface part is arranged at the top of the feeding cylinder and is used for uniform flow rate. The heat medium of the feeding cylinder with the cambered surface gradually reduces and is more stable in flow rate when entering the inside of the condensing sheet, avoids sharp change of flow rate and generation of vortex, makes the flow rate uniform and stable, reduces local overheating phenomenon caused by flow rate difference at the feeding cylinder, and helps to relieve step temperature difference.

[0014] Preferably, the condenser comprises an explosion-proof porcelain top cover.

[0015] The utility model discloses the beneficial effect lies in: through the isolation gap formed in the isolation piece, the two sides of the isolation piece are isolated from the feeding cylinder and the heat exchange cavity respectively, so that the stress generated by the heat exchange fluid filled in the heat exchange cavity does not directly act on the inner wall of the feeding cylinder provided with the enamel coating, and the enamel explosion is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural schematic drawing of the utility model.

[0017] Figure 2 It is the structural schematic drawing of the utility model when not setting the isolation piece.

[0018] Figure 3 It is the structural bottom view of the utility model.

[0019] The reference signs include: 1, roof;11, feeding through hole two;2, bottom plate;21, feeding through hole one;3, side plate;4, heat exchange cavity;5, isolation piece;51, inner ring;52, outer ring;53, annular end face;6, isolation gap;7, feeding cylinder;71, cambered surface part. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0021] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" are defined based on the contours of the corresponding components. Terms such as "first" and "second" used in this disclosure are for distinguishing one element from another and do not imply sequence or importance.

[0022] Example 1

[0023] like Figure 1 As shown, an explosion-proof ceramic top cover includes a top plate 1, a bottom plate 2, and a side plate 3. The top plate 1 and the bottom plate 2 are arranged opposite to each other, and the side plate 3 connects the top plate 1 and the bottom plate 2. A heat exchange cavity 4 is formed between the top plate 1 and the bottom plate 2. A feeding channel is provided between the top plate 1 and the bottom plate 2. The feeding channel includes a feeding cylinder 7 and an isolation member 5. The isolation member 5 is disposed between the feeding cylinder 7 and the heat exchange cavity 4. An isolation gap 6 is provided inside the isolation member 5 to isolate the heat exchange cavity 4 and the feeding channel. In this solution, the isolation member 5 is provided on the outer wall of the feeding cylinder 7. Through the isolation gap 6 formed inside the isolation member 5, the two sides of the isolation member 5 are isolated from the feeding cylinder 7 and the heat exchange cavity 4, respectively. This prevents the stress generated by the heat exchange fluid filling the heat exchange cavity 4 from directly acting on the inner wall of the feeding cylinder 7, which is coated with enamel, thus avoiding enamel cracking.

[0024] Preferably, the isolation member 5 includes an inner ring 51 and an outer ring 52, with the inner ring 51 coaxially disposed inside the outer ring 52, forming an annular isolation gap 6 between the inner ring 51 and the outer ring 52.

[0025] Example 2

[0026] In this embodiment, the base plate 2 has a feed through hole 21, the inner diameter of which is smaller than the inner diameter of the inner ring 51. The inner ring 51 and outer ring 52 of the isolation member 5 are welded to the base plate 2. Since the base plate 2 of the top cover needs to contact the medium to be cooled entering the condenser for heat exchange, the base plate 2 needs to be enamel-coated. In order to protect the smoothness of the enamel coating, the inner ring 51 and outer ring 52 of the isolation member 5 are directly welded to the base plate 2 inside the heat exchange cavity 4.

[0027] In this embodiment, the top plate 1 has a feed through hole 2 11, and the inner wall of the feed through hole 2 11 is connected to the outer ring 52 of the isolation member 5. The top plate 1 of the top cover is located outside the condenser and will not come into contact with the medium to be cooled, so there is no need to perform enamel treatment. The outer wall of the isolation member 5 is connected to the inner wall of the feed through hole 2 11.

[0028] The isolation member 5 in this embodiment also includes an annular end face 53, which is disposed between the inner ring 51 and the outer ring 52. The annular end face 53 is used to provide support for the isolation gap 6. It also includes an annular end face 53 for connecting the inner ring 51 and the outer ring 52. The annular end face 53 is positioned such that when the stress generated by the heat exchange fluid in the heat exchange cavity 4 during flow is applied to the isolation member 5, the connecting end face between the inner ring 51 and the outer ring 52 can provide support.

[0029] Example 3

[0030] In one embodiment, the annular end face 53 of the isolator 5 is provided with an air hole for connecting the isolation cavity with the external environment. The upper end face of the isolator 5 faces the outside of the condenser. The air hole connecting to the outside air not only maintains the internal air pressure balance of the isolator 5 after being subjected to stress, but also allows for timely heat dissipation, maintaining the temperature in the internal isolation gap 53 of the isolator 5 to a normal level for transition.

[0031] In another embodiment, the annular end face 53 of the isolation member 5 has an air hole for connecting an air pump, which then injects a gas with low thermal conductivity into the isolation gap. The air hole connects to the gas medium with low thermal conductivity injected into the isolation gap 53, thus hindering heat transfer.

[0032] Example 4

[0033] In this embodiment, the feed cylinder 7 is positioned above the isolation member 5, and the feed cylinder 7 and the inner ring 51 of the isolation member 5 are integrally formed. This design integrates the feed cylinder 7 and the inner ring 51. Since the inner ring 51 is not directly connected to the top plate 1, the feed cylinder 7 does not require additional installation. The inner ring 51 can directly extend beyond the top plate 1 to form the feed cylinder 7, allowing direct feeding within the feed cylinder 7.

[0034] The outer ring 52 extends to the outside of the top plate 1, and the outer end of the extended outer ring 52 is connected to the annular end face 53. The annular end face 53 and the top plate 1 are staggered. The outer ring 52 extends to the outside of the top plate 1, and the installation position of the annular end face 53 is also located outside the top plate 1. The welding positions of the inner and outer walls of the outer ring 52 to the annular end face 53 and the top plate 1 are staggered, which not only avoids weak points and maintains strength, but also avoids local stress concentration and reduces the risk of cracking. In addition, the isolation gap 6 is also set outside the top plate 1, which makes the space of the isolation gap 6 larger and improves the heat insulation effect of the isolation gap 6.

[0035] The feed cylinder 7 includes an arc-shaped section 71, which is located at the top of the feed cylinder 7 and is used to uniformly measure the flow rate. The flow rate of the heat transfer medium in the feed cylinder 7 with the arc-shaped section gradually decreases and becomes more stable as it enters the condenser plate, avoiding abrupt changes in flow rate and the generation of eddies. This ensures a uniform and stable flow rate, reduces localized overheating caused by flow rate differences at the feed cylinder 7, and helps alleviate stepped temperature differences.

[0036] Example 5

[0037] A condenser includes an explosion-proof ceramic top cover. It also includes multiple stacked condensing fins arranged below the explosion-proof ceramic cover. Each condensing fin has at least one material passage, allowing the medium to be cooled, which enters the condenser through the feed cylinder of the explosion-proof ceramic top cover, to sequentially contact the heat exchange fins downwards along the material channels. The material channels are distributed along the sides of the condensing fins. Annular sealing gaskets are provided between the top cover and the condensing fins, and at the edges between adjacent condensing fins. The explosion-proof ceramic top cover, the multiple condensing fins, and the annular sealing gaskets are stacked and securely connected by fastening clamps. The material channels of adjacent condensing fins are staggered, forming an S-shaped flow path for the medium to be cooled, supported by the annular sealing gaskets. This maximizes the contact between the medium and the condensing fins, improving the cooling effect.

[0038] The top cover and condenser fins are internally reinforced with ribs that are staggered to form an S-shaped heat exchange medium flow channel. The heat exchange medium is filled into the heat exchange medium channel. The top cover and condenser fins are equipped with inlet and outlet water connectors at their external baffles. External pipes connect the top cover and multiple condenser fins via these inlet and outlet water connectors, allowing the refrigerant to be transported from the refrigerant flow channel inside the lowest condenser fin to the heat exchange medium channel of the uppermost explosion-proof ceramic top cover, and finally discharged from the outlet water connector of the explosion-proof ceramic top cover for recycling.

[0039] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An explosion-proof ceramic top cover, characterized in that: It includes a top plate (1), a bottom plate (2) and a side plate (3). The top plate (1) and the bottom plate (2) are arranged opposite to each other. The side plate (3) connects the top plate (1) and the bottom plate (2). A heat exchange cavity (4) is formed between the top plate (1) and the bottom plate (2). A feeding channel is provided between the top plate (1) and the bottom plate (2). The feeding channel includes a feeding cylinder (7) and an isolation component (5). The isolation component (5) is provided between the feeding cylinder (7) and the heat exchange cavity (4). An isolation gap (6) is provided inside the isolation component (5) to isolate the heat exchange cavity (4) and the feeding channel.

2. The explosion-proof ceramic top cover according to claim 1, characterized in that: The isolation element (5) includes an inner ring (51) and an outer ring (52). The inner ring (51) is coaxially disposed inside the outer ring (52), and an annular isolation gap (6) is formed between the inner ring (51) and the outer ring (52).

3. The explosion-proof ceramic top cover according to claim 1, characterized in that: The base plate (2) has a feed through hole (21), the inner diameter of which is smaller than the inner diameter of the inner ring (51). The inner ring (51) and outer ring (52) of the isolation member (5) are welded to the base plate (2).

4. The explosion-proof ceramic top cover according to claim 1, characterized in that: The top plate (1) has a feed through hole 2 (11), and the inner wall of the feed through hole 2 (11) is connected to the outer ring (52) of the isolation member (5).

5. The explosion-proof ceramic top cover according to claim 2, characterized in that: The isolation element (5) also includes an annular end face (53), which is disposed between the inner ring (51) and the outer ring (52) and is used to provide support for the isolation gap (6).

6. The explosion-proof ceramic top cover according to claim 5, characterized in that: The annular end face (53) of the isolation component (5) is provided with multiple air holes, which are used to connect the isolation cavity with the external environment; or, the annular end face (53) of the isolation component (5) is provided with air holes for connecting an air pump, which injects a gas with low thermal conductivity into the isolation gap (6).

7. The explosion-proof ceramic top cover according to claim 1, characterized in that: The feed cylinder (7) is positioned above the isolation member (5), and the feed cylinder (7) and the inner ring (51) of the isolation member (5) are integrally formed.

8. The explosion-proof ceramic top cover according to claim 2, characterized in that: The outer ring (52) extends to the outside of the top plate (1), and the extended outer end of the outer ring (52) is connected to the annular end face (53). The annular end face (53) and the top plate (1) are staggered.

9. The explosion-proof ceramic top cover according to claim 7, characterized in that: The feed cylinder (7) includes an arc-shaped section (71) which is located at the top of the feed cylinder (7) and is used to uniformly measure the flow rate.

10. A condenser, characterized in that, Includes the explosion-proof ceramic top cover as described in any one of claims 1-9.

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