Feeding plate heat exchanger

Abstract

The utility model belongs to the field of petroleum refining, and particularly relates to a feeding plate heat exchanger. The filter comprises a filter supporting disc, a filter element and a sealing and fastening device, the filter element is arranged on the filter supporting disc, and the sealing and fastening device is arranged on the upper surface of the filter supporting disc and used for pressing, reinforcing and sealing the filter element. The sealing and fastening device comprises a sealing gasket, a reinforcing plate and a fastening disc; the sealing pad is arranged on the filter element, the reinforcing plate is arranged on the sealing pad, and the fastening disc is arranged at the uppermost end to press and fix the sealing pad and the reinforcing plate. The sealing failure of the filter element can be effectively prevented and controlled, so that mechanical impurities cannot enter the plate heat exchanger along with materials, core equipment is protected, and hidden dangers in the production process are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of petroleum refining, concretely relates to a feed plate heat exchanger. BACKGROUND

[0002] The petroleum refining industry uses various media as raw materials or auxiliary materials, and through conveying equipment, process pipelines, containers and other equipment, various processing processes are formed to achieve the goal of converting from raw materials to products. In the production process, the cleanliness of various process media is crucial for equipment protection and continuous production. If the cleanliness does not meet the required precision, it will cause pump emptying, pipeline blockage, pressure drop increase and other problems, and if not handled in time, it may even cause unplanned shutdown, pump leakage, furnace tube rupture and other serious accidents, which will have a great impact on safety production. Therefore, how to ensure the cleanliness of the medium has become an important concern of the refining industry.

[0003] The feed plate heat exchanger is a key core equipment in the reforming industry, which is precise and expensive. It has the advantages of large heat exchange area and high efficiency, but it does not set a shut-off valve because the inlet and outlet pipe diameters are large, and the plates are densely arranged and cannot be cleaned regularly. Therefore, the cleanliness of the feed plate heat exchanger is very important for its service life.

[0004] To ensure the normal operation of the plate heat exchanger, a set of double basket filters is provided at the inlet, and a plurality of steel filter cartridges are vertically distributed on the internal support disc. The filter cartridge and the support disc are sealed by a rubber ring, and a pressure plate and a bolt are used for fastening, so that the filter cartridge does not loosen.

[0005] In the actual operation and maintenance process, it is found that this type of sealing has certain defects, and the specific circumstances are as follows: the round sealing strip of the filter cartridge will cause the pre-tightening force to decrease during installation; during installation of the filter cartridge to the support disc, the sealing strip is radially extruded due to the small gap, and the sealing strip is damaged when the stress is uneven, resulting in sealing failure; during installation of the pressure plate, the bolt torque value is increased to ensure that the pressure rib contacts each filter cartridge, causing uneven stress on the top of each filter cartridge, longitudinal extrusion of the round sealing strip, and increased probability of sealing failure.

[0006] After the filter cartridge sealing fails, the trace amount of mechanical impurities carried by the oil product will gather in the liquid distributor through the failure point, eventually causing the oil product to be unable to pass through, the device to be shut down, the downstream hydrogenation device to be forced to shut down, and huge economic losses, which does not meet the long-term operation target of the industry. UTILITY MODEL CONTENT

[0007] In order to solve the above technical problems, the utility model provides a feed plate heat exchanger.

[0008] The technical scheme adopted is:

[0009] The utility model provides a kind of feed plate heat exchanger, at least including shell;The bottom of shell is connected with support leg, support leg is connected with ground plate;The center position of the bottom of shell is opened with blowdown, the lower lateral wall of shell is opened with feed inlet, the top of shell is opened with venting / wind blowing port, the upper lateral wall of shell is opened with discharge port;The inner lateral wall of the upper portion of shell is connected with connecting piece, the connecting piece is located the lower edge of discharge port;It further includes filtering mechanism;The filtering mechanism is connected on connecting piece;

[0010] The filtering mechanism includes filter support disc, filter element and sealing fastening device, the filter element is arranged on the filter support disc, and the sealing fastening device is connected to the upper surface of the filter support disc to press and seal the upper part of the filter element on the filter support disc.

[0011] A plurality of through holes for mounting the filter element are distributed on the filter support disc, and a connecting hole for connecting with the sealing fastening device is opened on the edge of the plate surface of the filter support disc.

[0012] The sealing fastening device includes a sealing gasket, a reinforcing plate and a fastening disc; the sealing gasket is arranged on the upper surface of the filter support disc, the reinforcing plate is arranged on the sealing gasket, and the fastening disc is arranged on the reinforcing plate to press and fix the sealing gasket and the reinforcing plate.

[0013] The sealing gasket has the same size as the filter support disc; the sealing gasket is opened with a through hole matched with the filter support disc for the filter element to pass through, and a connecting hole for connecting with the reinforcing plate, the fastening disc and the filter support disc.

[0014] The sealing gasket is made of butyronitrile rubber, and has a thickness of 4-6 mm.

[0015] The reinforcing plate has the same size as the filter support disc; the reinforcing plate is opened with a through hole matched with the filter support disc for the filter element to pass through, and a connecting hole for connecting with the sealing gasket, the fastening disc and the filter support disc.

[0016] The reinforcing plate is made of steel plate, and has a thickness of 2-5 mm.

[0017] The fastening disc is a circular ring, and has a diameter smaller than that of the filter support disc; the fastening disc is uniformly distributed with three positioning connecting holes matched with the sealing gasket and the reinforcing plate around the periphery.

[0018] The filter element is made of metal material, and has a U-shaped structure with an upper opening, a bottom and a surrounding multi-layer fine filter screen; the filter element is arranged with an annular boss around the periphery of the upper opening end, and the filter element is detachably mounted on the filter support disc through the annular boss; the filter element is filled with filter medium.

[0019] The utility model has the following beneficial effects:

[0020] The filter mechanism can effectively prevent and control the sealing failure of the filter core, so that mechanical impurities cannot enter the feed plate heat exchanger along with the material, and the core equipment is protected, and the hidden danger in the production process is solved.

[0021] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following is the preferred embodiment of the utility model and the detailed description of the following. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiment or the prior art, the drawings needed in the embodiment will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 It is a top view of the utility model.

[0024] Figure 2 It is a filter schematic view of the utility model.

[0025] Figure 3 It is a side view of the utility model.

[0026] Figure 4 It is a structural schematic view of the feed plate heat exchanger of the utility model.

[0027] In the drawing: 1, filter support disc; 2, sealing gasket; 3, reinforcing plate; 4, fastening disc; 5, filter core; 6, bolt; 7, supporting leg; 8, grounding plate; 9, shell; 10, blowdown; 11, feed inlet; 12, discharge outlet; 13, venting port / air blowing port; 14, connecting piece. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0029] Embodiment one: according to Figures 1-3The filter mechanism for the feed plate heat exchanger comprises a filter support plate 1, a filter element 5 and a sealing fastening device, the filter element 5 is arranged on the filter support plate 1, and the sealing fastening device is connected to the upper surface of the filter support plate 1 to press and seal the upper part of the filter element 5 on the filter support plate 1.

[0030] In some embodiments, a plurality of through holes for mounting the filter element 5 are distributed on the filter support plate 1, and a connecting hole for connecting with the sealing fastening device is opened on the edge of the plate surface of the filter support plate 1.

[0031] Further, the sealing fastening device comprises a sealing gasket 2, a reinforcing plate 3 and a fastening disc 4; the sealing gasket 2 is arranged on the upper surface of the filter support plate 1, the reinforcing plate 3 is arranged on the sealing gasket 2, and the fastening disc 4 is arranged on the reinforcing plate 3 to press and fix the sealing gasket 2 and the reinforcing plate 3.

[0032] Further, the sealing gasket 2 has the same size as the filter support plate 1; a through hole for the filter element 5 to pass through and a connecting hole for connecting with the reinforcing plate 3, the fastening disc 4 and the filter support plate 1 are opened on the sealing gasket 2.

[0033] Further, the sealing gasket 2 is made of butyronitrile rubber, and has a thickness of 4-6 mm.

[0034] Further, the reinforcing plate 3 has the same size as the filter support plate 1; a through hole for the filter element 5 to pass through and a connecting hole for connecting with the sealing gasket 2, the fastening disc 4 and the filter support plate 1 are opened on the reinforcing plate 3.

[0035] Further, the reinforcing plate 3 is made of steel plate, and has a thickness of 2-5 mm.

[0036] In some embodiments, the fastening disc 4 is a circular ring, the diameter of the fastening disc 4 is smaller than the diameter of the filter support plate 1; and three positioning connecting holes matched with the sealing gasket 2 and the reinforcing plate 3 are uniformly distributed along the periphery of the fastening disc 4.

[0037] In some embodiments, the filter element 5 is made of metal material, and has a U-shaped structure with an opening at the upper part, a bottom and a plurality of thin and dense filter screens around the bottom; a ring-shaped boss is arranged along the periphery of the opening end of the filter element 5, the filter element 5 is detachably mounted on the filter support plate 1 through the ring-shaped boss; and a filter medium is filled in the filter element 5. The ring-shaped boss of the filter element 5 is pressed and sealed on the filter support plate 1 by the sealing fastening device.

[0038] In the specific application, the process is as follows:

[0039] First, ensure that there are no impurities on any of the components. Then, connect the filter support plate 1 to the connector 14 on the upper inner side wall of the housing 9. Next, insert the filter element 5 into each through hole on the filter support plate 1, ensuring that the filter element 5 fits tightly with the filter support plate 1 without any gaps. Then, place the processed sealing gasket 2, reinforcing plate 3, and fastening plate 4 on the filter support plate 1 in sequence, align the connecting holes on the sealing gasket 2, reinforcing plate 3, and fastening plate 4, and insert the bolts 6 into the connecting holes to tighten them. This completes the installation of the filter mechanism. Afterward, use a feeler gauge to check if it is qualified.

[0040] After the filter element is installed, the sealing gasket 2 and the reinforcing plate 3 are used to press and reinforce the filter element, ensuring that the sealing gasket 2 completely seals the top support of the filter element 5 and the reinforcing plate.

[0041] When replacing filter element 5, first close the inlet and outlet valves of the feed plate heat exchanger, then remove the old filter element 5, install the new filter element, and ensure that the installation is correct.

[0042] The main function of filter element 5 in this embodiment is to remove trace mechanical impurities entering the feed plate heat exchanger. The internal filter screens of the filter element are interwoven, forming a complex filtration structure. The surface of filter element 5 undergoes special treatment, and the filter screen material is typically made of high-strength, corrosion-resistant materials such as stainless steel, effectively blocking the passage of mechanical impurities while ensuring smooth fluid flow. Its fine filter screen structure effectively captures impurities of various particle sizes, ensuring a high level of cleanliness for the medium entering the heat exchanger, thereby protecting the heat exchanger plates and extending their service life.

[0043] The diameter and height of the filter element 5 are designed according to the different models of feed plate heat exchangers to ensure a perfect fit with the filtration mechanism of the feed plate heat exchanger. The filter element is corrosion-resistant and can operate stably for a long time in environments with corrosive fluids, such as petroleum refining. The filter medium is a fine filter screen or filter membrane, made of materials such as stainless steel wire mesh and synthetic fibers, which can capture tiny impurity particles.

[0044] The filter element 5 has sufficient pressure resistance, enabling it to withstand a certain fluid pressure during operation without deformation or rupture. The filter element is designed for easy replacement, facilitating maintenance and upkeep.

[0045] This invention utilizes a fine filter medium to remove minute impurities from fluids, improving the cleanliness of the fluid entering the plate heat exchanger. It is suitable for various corrosive fluid environments, such as those in the oil refining industry, ensuring long-term stable operation.

[0046] The filter support plate 1 of this utility model provides reliable support, enabling the filter element 5 to withstand the pressure and impact during operation.

[0047] The utility model discloses a structure convenient to dismount and install, and facilitates maintenance and maintenance, and reduces equipment downtime.

[0048] After the installation of the filter core is finished, the sealing gasket and the reinforcing plate are used to compress and reinforce the filter core, so that the sealing gasket completely seals the filter core top bearing platform and the reinforcing plate, and the plug gauge detection is qualified. The sealing gasket and the reinforcing plate are used to increase the sealing area, eliminate various defects of the filter core sealing failure in the installation and use process, and guarantee the reliability of the filter sealing.

[0049] Embodiment two: refer to Figures 1-4 A feed plate heat exchanger at least includes a shell 9; the bottom of the shell 9 is connected with a supporting leg 7, and the supporting leg 7 is connected with a grounding plate 8; a blowdown port 10 is formed in the bottom center position of the shell 9, a feed port 11 is formed in the lower sidewall of the shell 9, a venting port / air blowing port 13 is formed in the top of the shell 9, and a discharge port 12 is formed in the upper sidewall of the shell 9; a connecting piece 14 is connected to the inner sidewall of the upper part of the shell 9, and the connecting piece 14 is located below the discharge port 12; and a filtering mechanism is further included; the filtering mechanism is connected to the connecting piece 14.

[0050] The filtering mechanism in the utility model is used in the feed plate heat exchanger, can effectively prevent and control the filter core sealing failure, so that mechanical impurities cannot enter the feed plate heat exchanger along with the materials, and the core equipment of the feed plate heat exchanger is protected, and the hidden danger in the production process is eliminated.

[0051] In the case of no conflict, the skilled in the art can combine the related technical features in the above examples according to the actual situation to achieve the corresponding technical effect, and the specific combinations are not described here.

[0052] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0053] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features.

Claims

1. A feed plate heat exchanger, comprising at least a shell (9); a support leg (7) connected to the bottom of the shell (9), and a grounding plate (8) connected to the support leg (7); a blowdown port (10) is opened at the center of the bottom of the shell (9), a feed port (11) is opened on the lower sidewall of the shell (9), a venting port / wind blowing port (13) is opened at the top of the shell (9), and a discharge port (12) is opened on the upper sidewall of the shell (9); a connecting piece (14) is connected to the inner sidewall of the upper portion of the shell (9), and the connecting piece (14) is located below the lower edge of the discharge port (12); characterized in that: It also comprises a filtering mechanism; the filtering mechanism is connected to the connecting piece (14); The filtering mechanism comprises a filter support disc (1), a filter core (5) and a sealing fastening device, the filter core (5) is arranged on the filter support disc (1), and the sealing fastening device is connected to the upper surface of the filter support disc (1) to press and seal the upper part of the filter core (5) on the filter support disc (1).

2. A feed plate heat exchanger according to claim 1, characterized in that: A plurality of through holes for mounting the filter core (5) are distributed on the filter support disc (1), and a connecting hole for connecting with the sealing fastening device is formed in the edge of the plate surface of the filter support disc (1).

3. A feed plate heat exchanger according to claim 1 or 2, characterised in that: The sealing fastening device comprises a sealing gasket (2), a reinforcing plate (3) and a fastening disc (4); the sealing gasket (2) is arranged on the upper surface of the filter support disc (1), the reinforcing plate (3) is arranged on the sealing gasket (2), and the fastening disc (4) is arranged on the reinforcing plate (3) to press and fix the sealing gasket (2) and the reinforcing plate (3).

4. A feed plate heat exchanger according to claim 3, wherein: The sealing gasket (2) has the same size as the filter support disc (1); the sealing gasket (2) is provided with through holes matched with the filter support disc (1) for the filter core (5) to pass through, and connecting holes for connecting with the reinforcing plate (3), the fastening disc (4) and the filter support disc (1).

5. A feed plate heat exchanger according to claim 4, characterised in that: The sealing gasket (2) is made of butyronitrile rubber, and has a thickness of 4-6 mm.

6. A feed plate heat exchanger according to claim 3, wherein: The reinforcing plate (3) has the same size as the filter support disc (1); the reinforcing plate (3) is provided with through holes matched with the filter support disc (1) for the filter core (5) to pass through, and connecting holes for connecting with the sealing gasket (2), the fastening disc (4) and the filter support disc (1).

7. A feed plate heat exchanger according to claim 6, characterised in that: The reinforcing plate (3) is made of steel plate, and has a thickness of 2-5 mm.

8. A feed plate heat exchanger according to claim 3, wherein: The fastening disc (4) is a circular ring, and has a diameter smaller than that of the filter support disc (1); the fastening disc (4) is uniformly provided with three positioning connecting holes matched with the sealing gasket (2) and the reinforcing plate (3) along the periphery.

9. A feed plate heat exchanger according to claim 1, characterized in that: The filter core (5) is made of metal material, and has a U-shaped structure with an upper opening, a bottom and a periphery surrounded by multiple layers of fine filter screens; the filter core (5) is provided with an annular boss along the periphery of the upper opening end, and is detachably mounted on the filter support disc (1) through the annular boss; the filter core (5) is filled with filter medium.

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