Heating network heater

Abstract

The utility model discloses a heating network heater which comprises a cylinder body, tube plates, U-shaped bundling tubes and baffles, a water chamber is arranged on one side of the cylinder body, the tube plates are arranged at the front end and the rear end of an inner cavity of the cylinder body, the baffles comprise the upper baffle and the lower baffle, and the upper baffle and the lower baffle are arranged in the middle of the inner cavity of the cylinder body in a staggered mode. The U-shaped bundling pipe is fixed in the inner cavity of the barrel body through the pipe plate and the baffle plate, a water inlet of the U-shaped bundling pipe is positioned on the inner side of the water inlet cavity on the lower part of the water chamber, and a water outlet of the U-shaped bundling pipe is positioned on the inner side of the water outlet cavity on the upper part of the water chamber; the two ends of the bundling pipe through hole of the pipe plate and the two ends of the bundling pipe through hole of the baffle are each provided with an expansion sleeving part extending outwards. The problems that in the transportation process of an existing heat supply network heat exchanger, U-shaped bundling pipes are prone to deformation due to jolt, and subsequent taking-out for maintenance and replacement is affected are solved.

Description

Technical Field

[0001] The utility model relates to the field of heat exchange equipment, in particular to a heat network heater. Background Art

[0002] The heating network heater is a key equipment of the heating network system and one of the main auxiliary equipment of the thermal power plant. Its main function is to use the steam extraction from the turbine or the steam drawn from the boiler to heat the circulating water in the hot water supply system to meet the requirements of heating users.

[0003] Specifically, reference may be made to the Chinese patent with publication number CN104864747A for understanding. The above patent discloses an energy-saving heat network heater, including a shell, a front end pipe box, a rear end pipe box and a tube bundle. A partition plate is provided in the front end pipe box to divide the tube bundle into two parts, an upper part and a lower part. A steam buffer cladding and a hydrophobic storage cladding are provided at the upper part and the lower part of the shell respectively. The steam inlet pipe connection is provided at the upper part of the steam buffer cladding, and the hydrophobic outlet pipe connection is provided at the lower part of the hydrophobic storage cladding.

[0004] The heated water is passed into the bottom of the front end pipe box and enters the tube bundle from the bottom of the partition baffle. The doubled heated water flows along the tube bundle to the tube bundle above the partition baffle. At this time, high-temperature steam is passed into the shell from the steam inlet pipe. The steam contacts the tube bundle and exchanges heat with the heated water in the tube bundle, so that the temperature of the doubled heated water increases. Then the heated water returns to the front end pipe box from the upper tube bundle outlet and is located above the partition baffle, and is finally discharged from the front end pipe box. After the steam exchanges heat with the tube bundle, it liquefies into condensed water and falls into the drain storage shell, and is finally discharged from the drain outlet pipe.

[0005] From the above records, we can see that the existing heat network heater is a relatively mature equipment, but we still found some problems after using the above equipment, that is, after the heat network heater has been used for a long time, it is usually necessary to clean or replace the U-shaped cluster tube inside it. If it is not cleaned or replaced, a lot of scale will adhere to the surface of the U-shaped cluster tube, affecting the heat exchange efficiency. When replacing the U-shaped cluster tube, it is often time-consuming and laborious. This is mainly because the supporting part between the U-shaped cluster tube and the tube sheet and baffle is narrow. When transporting the heat network heater, bumps often occur, and the too narrow contact surface easily causes the U-shaped cluster tube to deform at the supporting part of the tube sheet and the baffle. In order to solve this problem, the existing heat network heater is improved. Utility Model Content

[0006] The utility model aims to provide a heating network heater to solve the problem that the U-shaped cluster tubes of the existing heating network heat exchanger are easily deformed due to bumps during transportation, which affects the subsequent removal for maintenance and replacement.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A heat network heater comprises a cylinder, a tube sheet, a U-shaped cluster tube and a baffle, a water chamber is provided on one side of the cylinder, the tube sheet is arranged at the front end and the rear end of the cylinder inner cavity, the baffle comprises an upper baffle and a lower baffle, the upper baffle and the lower baffle are staggered and arranged in the middle of the cylinder inner cavity, the U-shaped cluster tube is fixed in the inner cavity of the cylinder through the tube sheet and the baffle, the water inlet of the U-shaped cluster tube is located on the inner side of the water inlet cavity at the lower part of the water chamber, and the water outlet of the U-shaped cluster tube is located on the inner side of the water outlet cavity at the upper part of the water chamber, and both ends of the cluster tube through hole of the tube sheet and the cluster tube through hole of the baffle are provided with expansion sleeve parts extending outward.

[0009] Outwardly extending expansion sleeve portions are provided at both ends of the cluster tube through holes of the tube sheet and the baffle, which effectively increases the contact surface between the U-shaped cluster tube and the tube sheet, and between the U-shaped cluster tube and the baffle, reduces the probability of large deformation, and makes subsequent replacement easier.

[0010] As a further preferred embodiment of the present invention, a hot steam inlet is provided at one end of the top of the cylinder body close to the water chamber, and an L-shaped steam impact prevention plate is provided at the hot steam inlet.

[0011] The anti-steam impact plate can effectively protect the U-shaped cluster tubes at the hot steam inlet.

[0012] As a further preferred embodiment of the present invention, reaction liquid spray heads are evenly arranged on the top of the cylinder.

[0013] It is convenient to spray some acidic liquid to soften the scale outside the U-shaped cluster tube.

[0014] As a further preferred embodiment of the present invention, the outer side of the water inlet cavity at the lower part of the water chamber is connected to the filter through a water inlet pipe.

[0015] The filtered water produces less scale, which can effectively increase the service life of the U-shaped cluster tube.

[0016] As a further preferred embodiment of the present invention, staggered slow-flow baffles are evenly arranged in the U-shaped cluster tube.

[0017] Reduce the flow rate of water in the U-shaped cluster tube to make the heat exchange more complete.

[0018] As a further preferred embodiment of the present invention, the expansion sleeve portion includes an upper sleeve and a lower sleeve, the upper sleeve is connected to the tube sheet or the baffle by bolts, and the lower sleeve is also connected to the tube sheet or the baffle by bolts.

[0019] It is convenient to remove the expansion sleeve part, and it is easier to draw out the U-shaped cluster tube after the expansion sleeve part is removed because the contact area is reduced and the friction is reduced.

[0020] As a further preference of the utility model, a temperature sensor is provided in the water outlet cavity at the upper part of the water chamber, and the outer side of the water outlet cavity at the upper part of the water chamber is connected to the electric heating box through a water outlet pipe, and the temperature sensor and the electric heating box are both connected to the control system electrical signal.

[0021] It is convenient to monitor the water temperature in the water cavity. If the preset water temperature is not reached, the electric heating box will be automatically started for electric heating, which can effectively ensure the heating.

[0022] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0023] 1. Outwardly extending expansion sleeves are provided at both ends of the cluster tube through holes of the tube sheet and the baffle, which effectively increases the contact surface between the U-shaped cluster tube and the tube sheet, and between the U-shaped cluster tube and the baffle, reduces the probability of large deformation, and makes subsequent replacement easier.

[0024] 2. The anti-steam impact plate can effectively protect the U-shaped cluster tube at the hot steam inlet.

[0025] 3. It is convenient to spray some acidic liquid to soften the scale outside the U-shaped cluster tube.

[0026] 4. The filtered water produces less scale, which can effectively increase the service life of the U-shaped cluster tube.

[0027] 5. Reduce the flow rate of water in the U-shaped cluster tube to make the heat exchange more complete.

[0028] 6. It is easy to remove the expansion sleeve part. After removing the expansion sleeve part, it is easier to pull out the U-shaped cluster tube because the contact area is reduced and the friction is reduced.

[0029] 7. It is convenient to monitor the water temperature in the water chamber. If the preset water temperature is not reached, the electric heating box will be automatically started for electric heating, which can effectively ensure the heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the utility model.

[0031] Figure 2 It is a schematic diagram of the connection structure of the expanded socket part. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific embodiment 1:

[0039] Figure 1 , Figure 2 A heat network heater is shown, comprising a cylinder 1, a tube sheet 2, a U-shaped cluster tube 3 and a baffle 4, a water chamber 5 is provided on one side of the cylinder 1, the tube sheet 2 is arranged at the front end and the rear end of the inner cavity of the cylinder 1, the baffle 4 comprises an upper baffle 41 and a lower baffle 42, the upper baffle 41 and the lower baffle 42 are staggeredly arranged in the middle of the inner cavity of the cylinder 1, the U-shaped cluster tube 3 is fixed in the inner cavity of the cylinder 1 through the tube sheet 2 and the baffle 4, the water inlet of the U-shaped cluster tube 3 is located on the inner side of the water inlet cavity at the lower part of the water chamber 5, and the water outlet of the U-shaped cluster tube 3 is located on the inner side of the water outlet cavity at the upper part of the water chamber 5, and both ends of the cluster tube through hole of the tube sheet 2 and the cluster tube through hole of the baffle 4 are provided with an expansion sleeve 6 extending outward.

[0040] Outwardly extending expansion sleeve portions are provided at both ends of the cluster tube through holes of the tube sheet and the baffle, which effectively increases the contact surface between the U-shaped cluster tube and the tube sheet, and between the U-shaped cluster tube and the baffle, reduces the probability of large deformation, and makes subsequent replacement easier. Specific embodiment 2:

[0042] This embodiment further illustrates the cylinder 1 on the basis of the specific embodiment 1. A hot steam inlet is provided at one end of the top of the cylinder 1 close to the water chamber 5. An L-shaped steam shock-proof plate 7 is provided at the hot steam inlet.

[0043] The anti-steam impact plate can effectively protect the U-shaped cluster tubes at the hot steam inlet. Specific embodiment 3:

[0045] This embodiment further illustrates the cylinder 1 on the basis of the specific embodiment 1, and the top of the cylinder 1 is evenly provided with reaction liquid spray heads 8 .

[0046] It is convenient to spray some acidic liquid to soften the scale outside the U-shaped cluster tube. Specific embodiment 4:

[0048] This embodiment further illustrates the water chamber 5 on the basis of the specific embodiment 1. The outer side of the water inlet cavity at the lower part of the water chamber 5 is connected to the filter through a water inlet pipe.

[0049] The filtered water produces less scale, which can effectively increase the service life of the U-shaped cluster tube. Specific embodiment 5:

[0051] This embodiment further illustrates the U-shaped cluster tube 3 on the basis of the specific embodiment 1. The U-shaped cluster tube 3 is evenly and staggeredly provided with slow-flow baffles.

[0052] Reduce the flow rate of water in the U-shaped cluster tube to make the heat exchange more complete. Specific embodiment 6:

[0054] This embodiment further illustrates the expansion sleeve portion 6 based on the specific embodiment 1. The expansion sleeve portion 6 includes an upper sleeve 61 and a lower sleeve 62. The upper sleeve 61 is connected to the tube sheet 2 or the baffle 4 by bolts, and the lower sleeve 62 is also connected to the tube sheet 2 or the baffle 4 by bolts.

[0055] It is convenient to remove the expansion sleeve part, and it is easier to draw out the U-shaped cluster tube after the expansion sleeve part is removed because the contact area is reduced and the friction is reduced. Specific embodiment 7:

[0057] This embodiment further explains the water chamber 5 on the basis of the specific embodiment 1. A temperature sensor 10 is provided in the water outlet cavity at the upper part of the water chamber 5. The outer side of the water outlet cavity at the upper part of the water chamber 5 is connected to the electric heating box through a water outlet pipe. The temperature sensor 10 and the electric heating box are both connected to the control system electrical signal.

[0058] It is convenient to monitor the water temperature in the water cavity. If the preset water temperature is not reached, the electric heating box will be automatically started for electric heating, which can effectively ensure the heating.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating network heater, comprising a cylinder (1), a tube sheet (2), a U-shaped cluster tube (3) and a baffle (4), wherein a water chamber (5) is provided on one side of the cylinder (1), the tube sheet (2) is arranged at the front end and the rear end of the inner cavity of the cylinder (1), the baffle (4) comprises an upper baffle (41) and a lower baffle (42), the upper baffle (41) and the lower baffle (42) are arranged alternately in the middle of the inner cavity of the cylinder (1), the U-shaped cluster tube (3) is fixed in the inner cavity of the cylinder (1) through the tube sheet (2) and the baffle (4), the water inlet of the U-shaped cluster tube (3) is located on the inner side of the water inlet cavity at the lower part of the water chamber (5), and the water outlet of the U-shaped cluster tube (3) is located on the inner side of the water outlet cavity at the upper part of the water chamber (5), characterized in that: Both ends of the cluster tube through holes of the tube plate (2) and both ends of the cluster tube through holes of the baffle plate (4) are provided with expansion sleeve portions (6) extending outwards.

2. The heating network heater according to claim 1, characterized in that: A hot steam inlet is provided at one end of the top of the cylinder (1) close to the water chamber (5), and an L-shaped steam impact prevention plate (7) is provided at the hot steam inlet.

3. The heating network heater according to claim 1, characterized in that: The top of the cylinder (1) is also evenly provided with reaction liquid spray heads (8).

4. The heating network heater according to claim 1, characterized in that: The outer side of the water inlet cavity at the lower part of the water chamber (5) is connected to the filter via a water inlet pipe.

5. The heating network heater according to claim 1, characterized in that: The U-shaped cluster tube (3) is evenly and staggeredly provided with slow-flow baffles.

6. The heating network heater according to claim 1, characterized in that: The expanded sleeve portion (6) comprises an upper sleeve (61) and a lower sleeve (62); the upper sleeve (61) is connected to the tube sheet (2) or the baffle (4) via bolts, and the lower sleeve (62) is also connected to the tube sheet (2) or the baffle (4) via bolts.

7. The heating network heater according to claim 1, characterized in that: A temperature sensor (10) is provided in the water outlet cavity at the upper part of the water chamber (5); the outer side of the water outlet cavity at the upper part of the water chamber (5) is connected to an electric heating box via a water outlet pipe; and both the temperature sensor (10) and the electric heating box are connected to electrical signals of a control system.

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