CN216132111U - Horizontal bayonet steam heater - Google Patents

Abstract

The application discloses a horizontal bayonet steam heater which comprises a material cylinder part, a plurality of steam heat exchange tubes, a plurality of sleeves and a plurality of supporting pieces; the plurality of sleeves are respectively sleeved with the plurality of steam heat exchange tubes, and a gap exists between each sleeve and each steam heat exchange tube; the steam heat exchange tubes and the sleeves extend into the material barrel body, the end parts of the steam heat exchange tubes extending into the material barrel body are open ends, and the end parts of the sleeves extending into the material barrel body are closed ends; the steam input end of the steam heat exchange pipe and the open end of the sleeve pipe extend out of the material barrel body part; the supporting pieces are arranged inside the material barrel body at intervals and connected with the sleeves to support the sleeves. The application solves the technical problems that the joint of the tube plate and the heat exchange tube is seriously corroded by corrosive media and the steam heat exchange tube is easily damaged by vibration in the prior art, and realizes the purposes of reducing the corrosion degree of the joint of the tube plate and the heat exchange tube and reducing the vibration degree of the steam heat exchange tube.

Description

Horizontal bayonet steam heater

Technical Field

The application relates to the technical field of chemical material heating, in particular to a horizontal bayonet steam heater.

Background

A tubular heat exchanger (tubular exchanger) is a heat exchanger which is most widely applied in chemical industry and alcohol production. It is mainly composed of a shell, a tube plate, a heat exchange tube, a seal head, a baffle plate and the like. The required material can be respectively made of common carbon steel, red copper or stainless steel. When heat exchange is carried out, a fluid enters from the connecting pipe of the end socket, flows in the pipe and flows out from the outlet pipe at the other end of the end socket, which is called a pipe pass; the other fluid enters from a connecting pipe of the shell and flows out from the other connecting pipe on the shell, and the other fluid is called shell side. The shell and tube heat exchanger has simple and compact structure and low cost, but the outside of the tube cannot be cleaned mechanically. The heat exchanger tube bundle is connected to tube plates, the tube plates are respectively welded at two ends of a shell, a top cover is connected to the tube plates, and fluid inlet and outlet connecting tubes are arranged on the top cover and the shell. Typically a series of baffles perpendicular to the tube bundle are placed outside the tube. At the same time, the connection between the tubes and the tube plate and the shell is rigid, and the two fluids with different temperatures are arranged outside the tubes. Therefore, when the temperature difference between the tube wall and the shell wall is large, the thermal expansion difference between the two causes large temperature difference stress, so that the tube is twisted or loosened from the tube plate, and even the heat exchanger is damaged.

At present, in the known tube type heat exchanger, the high-temperature heat exchanger has large expansion and contraction amount in the use process, and the telescopic design needs to be added on the heat exchanger body, so that the manufacturing difficulty is high, the cost is high, the service life is short, and vibration is easy to generate in the steam heating process; the joint of the tube plate containing the corrosive medium and the heat exchange tube is seriously corroded, frequent maintenance is needed, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The application solves the technical problems that in the prior art, a heat exchanger body is high in expansion with heat and contraction with cold investment, large in manufacturing difficulty, serious in corrosion of a connecting part of a tube plate and a heat exchange tube by a corrosive medium and easy to damage due to vibration of a steam heat exchange tube, and achieves the purposes of reducing the investment cost of the heat exchanger, reducing the corrosion degree of the connecting part of the tube plate and the heat exchange tube and reducing the vibration degree of the steam heat exchange tube.

The application provides a horizontal bayonet steam heater which comprises a material cylinder part, a plurality of steam heat exchange tubes, a plurality of sleeves and a plurality of supporting pieces; the plurality of sleeve pipes are respectively sleeved with the plurality of steam heat exchange pipes, and a gap exists between each sleeve pipe and each steam heat exchange pipe; the steam heat exchange tubes and the sleeves extend into the material cylinder body part, the end part of each steam heat exchange tube extending into the material cylinder body part is an open end, and the end part of each sleeve extending into the material cylinder body part is a closed end; the steam input end of the steam heat exchange tube and the open end of the sleeve extend out of the material barrel body part; the supporting pieces are arranged inside the material barrel body at intervals and connected with the sleeves to support the sleeves.

In one possible implementation manner, the material cylinder part comprises a cylinder body, a material inlet, a material outlet and a first exhaust port; the top end of the cylinder body is provided with the material inlet, the part of the cylinder body higher than the sleeve is provided with the material outlet, and the bottom of the cylinder body is provided with the first exhaust port; one end of the cylinder body is a head sealing end, and the end part of the cylinder body, which deviates from the head sealing end, is communicated with and extends into the steam heat exchange tubes and the sleeves in a plurality, and is connected with the sleeves in a sealing manner.

In a possible implementation manner, the plurality of supporting members are fixedly connected to the inner side surface of the cylinder, a gap exists between the plurality of supporting members and the bottom surface of the cylinder, and the plurality of sleeves penetrate through the plurality of supporting members and are fixedly connected with the plurality of supporting members.

In a possible implementation manner, the circumferential side surface of the end part of the steam heat exchange pipe close to the closed end of the sleeve is provided with a plurality of steam outlets, so that steam enters a gap between the sleeve and the steam heat exchange pipe from the steam heat exchange pipe and forms condensed water to be discharged from the open end of the sleeve.

In a possible implementation manner, a plurality of buffer members are arranged on the outer side of the steam heat exchange tube, and the plurality of buffer members are arranged in gaps among the sleeves of the steam heat exchange tube; the output end of the steam heat exchange tube is provided with a tube bracket, and the tube bracket is arranged inside the sleeve and fixedly connected with the sleeve.

In one possible implementation, the steam heating device further comprises a steam channel part and a heating sleeve part; two ends of the heating sleeve part are respectively fixedly connected with the steam channel part and the barrel part; the end part of the sleeve extending out of the barrel part extends into the heating sleeve part, and the end part of the steam heat exchange pipe extending out of the barrel part penetrates through the heating sleeve part and extends into the steam channel part.

In one possible implementation manner, the steam channel part comprises a steam inlet cylinder, an inner extension pipe, a steam inlet and a second exhaust port; the inner extension pipe is positioned inside the steam inlet cylinder, the input end of the inner extension pipe is communicated with the steam inlet, and the output end of the inner extension pipe is communicated with the plurality of steam heat exchange pipes; the second drain port is arranged at the bottom of the steam inlet cylinder.

In one possible implementation, the heating jacket portion includes a connecting cylinder, a tube sheet, and a condensate discharge port; the connecting cylinder is fixedly connected with the steam channel part; the tube plate is fixedly connected to the end part, away from the steam channel part, of the connecting cylinder and is fixedly connected with the cylinder part; the end parts of the plurality of sleeves and the plurality of steam heat exchange tubes, which extend out of the barrel part, are communicated with the tube plates, and the sleeves are connected with the tube plates in a sealing manner.

In a possible implementation manner, a reinforcing beam is fixedly connected among the supports, and the reinforcing beam is fixedly connected to the inner side surface of the barrel.

One or more technical solutions provided in the present application have at least the following technical effects or advantages:

the steam heat exchanger is characterized in that a material barrel part, a plurality of steam heat exchange pipes, a plurality of sleeves and a plurality of supporting pieces are arranged; the plurality of sleeves are respectively sleeved with the plurality of steam heat exchange tubes, and a gap exists between each sleeve and each steam heat exchange tube; the steam heat exchange tubes and the sleeves extend into the material barrel body, the end parts of the steam heat exchange tubes extending into the material barrel body are open ends, and the end parts of the sleeves extending into the material barrel body are closed ends; the steam input end of the steam heat exchange pipe and the open end of the sleeve pipe extend out of the material barrel body part; the steam enters from the steam heat exchange tube, and after heat exchange is carried out on materials in the material barrel body, the materials leave from the opening end of the steam heat exchange tube and enter the sleeve, and finally flow out of the outer side of the material barrel body from the opening end of the sleeve after being condensed in a gap between the sleeve and the steam heat exchange tube through the plugging of the closed end of the sleeve; the plurality of supporting pieces are arranged inside the material barrel body at intervals and connected with the plurality of sleeves to support the plurality of sleeves, so that the vibration degree of the steam heat exchange pipe in the prior art is effectively reduced; this application need not increase flexible design because expend with heat and contract with cold volume is big in prior art's heat exchanger body, has reduced the investment cost of heat exchanger. The heat exchanger effectively solves the technical problems that in the prior art, a heat exchanger body has high expansion with heat and contraction with cold investment, large manufacturing difficulty, serious corrosion of a corrosive medium to the joint of the tube plate and the heat exchange tube and easy damage of the steam heat exchange tube due to vibration, and achieves the purposes of reducing the investment cost of the heat exchanger, reducing the corrosion degree of the joint of the tube plate and the heat exchange tube and reducing the vibration degree of the steam heat exchange tube.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present invention or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a horizontal bayonet steam heater according to an embodiment of the present invention;

FIG. 2 is a schematic view of a partial structure of the sleeve and the steam heat exchange tube at A in FIG. 1;

fig. 3 is a partially enlarged view of the region B in fig. 1.

Reference numerals: 1-a material barrel part; 11-a barrel body; 12-material inlet; 13-material outlet; 14-first drain; 2-steam heat exchange pipe; 21-a steam outlet; 22-a buffer; 23-a pipe bracket; 3-sleeving a pipe; 4-a support; 41-a reinforcing beam; 5-a steam channel part; 51-steam inlet drum; 52-inner extension tube; 53-steam inlet; 54-a second drain; 6-heating the sleeve part; 61-a connector barrel; 62-a tube sheet; 63-a condensate drain; 7-flange.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1, the horizontal bayonet steam heater provided by the embodiment of the present application comprises a material cylinder 1, a plurality of steam heat exchange tubes 2, a plurality of sleeves 3 and a plurality of supporting pieces 4; the plurality of sleeves 3 are respectively sleeved with the plurality of steam heat exchange tubes 2, and a gap exists between each sleeve 3 and each steam heat exchange tube 2; the steam heat exchange tubes 2 and the sleeves 3 extend into the material barrel body 1, the end of each steam heat exchange tube 2 extending into the material barrel body 1 is an open end, and the end of each sleeve 3 extending into the material barrel body 1 is a closed end; the steam input end of the steam heat exchange tube 2 and the open end of the sleeve 3 extend out of the material barrel body 1; the supporting members 4 are arranged inside the material barrel 1 at intervals and connected to the sleeves 3 to support the sleeves 3.

Referring to fig. 1, the material cylinder 1 includes a cylinder 11, a material inlet 12, a material outlet 13 and a first exhaust port 14; a material inlet 12 is arranged at the top end of the cylinder body 11, a material outlet 13 is arranged at the part of the cylinder body 11 higher than the sleeve 3, and a first exhaust port 14 is arranged at the bottom of the cylinder body 11; one end of the cylinder body 11 is a head sealing end, and the end of the cylinder body 11 departing from the head sealing end is penetrated into the steam heat exchange tubes 2 and the sleeves 3 and is connected with the sleeves 3 in a sealing manner. In the embodiment of the application, flanges 7 are welded on two sides of the cylinder body 11, and the plurality of steam heat exchange tubes 2 and the plurality of sleeves 3 are connected in a penetrating and inserting mode at one end, away from the end sealing end, of the cylinder body 11; a material inlet 12 is welded at the top end of the cylinder body 11; the number of the material outlets 13 is two in the embodiment of the application, the number of the steam heat exchange tubes 2 and the number of the sleeves 3 are reasonably selected according to actual conditions, the two material outlets 13 are symmetrically welded on two sides of the upper middle part of the cylinder body 11 close to the end sealing end, and the bottom of the cylinder body 11 is welded with the first exhaust port 14; after being input from the material inlet 12, the material is accumulated at the bottom of the barrel 11, and after exchanging heat with the steam heat exchange tube 2 and the sleeve 3, the material gradually rises to the material outlet 13 and overflows from the material outlet.

Referring to fig. 1, the plurality of supporting members 4 are fixedly connected to the inner side surface of the cylinder 11, and a gap is formed between the plurality of supporting members 4 and the bottom surface of the cylinder 11, and the plurality of sleeves 3 penetrate through the plurality of supporting members 4 and are fixedly connected to the plurality of supporting members 4. The quantity of support piece 4 in the embodiment of this application is rationally selected according to actual conditions, corrosion-resistant backup pad is chooseed for use to support piece 4, the backup pad passes through the bolt or welds in the side of barrel 11, a plurality of through-holes are link up to the centre of backup pad, a plurality of sleeve pipes 3 pass a plurality of through-holes and carry out the fixed stay, the bottom of backup pad does not contact with the bottom surface of barrel 11, for the material forms the passageway in 11 bottom surfaces of barrel flow, support piece 4 also can choose the splint that support frame or two half splint formed after the butt joint.

Referring to fig. 1-2, the circumferential side of the end of the steam heat exchange tube 2 near the closed end of the casing 3 is provided with a plurality of steam outlets 21 for allowing steam to enter the gap between the casing 3 and the steam heat exchange tube 2 from the steam heat exchange tube 2 and forming condensed water to be discharged from the open end of the casing 3. The end of every steam heat exchange tube 2's of this application embodiment is sealed off, and establish a plurality of steam outlet 21, the quantity of a plurality of steam outlet 21 is rationally selected according to actual conditions, steam gets into the back from steam heat exchange tube 2 input, carry out the heat transfer back to the material of material barrel 1 inside, leave from a plurality of steam outlet 21 and enter sleeve pipe 3, through the shutoff of the blind end of sleeve pipe 3, finally flow out the outside of barrel 11 from the open end of sleeve pipe 3 (the tip that stretches out barrel 11 promptly) after the condensation in the gap between sleeve pipe 3 and steam heat exchange tube 2. In the embodiment of the application, the tail end of the output end of the steam heat exchange tube 2 can be selected as the opening end, a plurality of steam outlets 21 are not needed to be arranged, steam is directly condensed in the sleeve 3 from the tail end opening after the heat exchange of the steam heat exchange tube 2, and the condensed water is guided to flow out of the opening end of the sleeve 3 from the gap between the sleeve 3 and the steam heat exchange tube 2.

Referring to fig. 1-2, a plurality of buffers 22 are disposed at the outer side of the steam heat exchange pipe 2, and the plurality of buffers 22 are disposed in the gap between the sleeves 3 of the steam heat exchange pipe 2; the output end of the steam heat exchange tube 2 is provided with a tube bracket 23, and the tube bracket 23 is positioned inside the sleeve 3 and fixedly connected with the sleeve 3. In this application embodiment, set up equidistant multirow circular aperture at the length direction of the middle perpendicular pipeline of steam heat exchange tube 2, insert high temperature resistant nonmetal bolster 22 in every aperture, prevent that the swing of steam heat exchange tube 2 from colliding with sleeve pipe 3 and producing the friction, the cladding of conduit saddle 23 is at the output of steam heat exchange tube 2, further supports and fixes steam heat exchange tube 2.

Referring to fig. 1, further includes a steam channel part 5 and a heating jacket part 6; two ends of the heating sleeve part 6 are respectively fixedly connected with the steam channel part 5 and the material barrel part 1; the end part of the sleeve 3 extending out of the material barrel part 1 extends into the heating sleeve part 6, and the end part of the steam heat exchange tube 2 extending out of the material barrel part 1 penetrates through the heating sleeve part 6 and extends into the steam channel part 5. In the embodiment of the application, the steam heat exchange tube 2 is integrally inserted into the heating sleeve part 6 and is tightly and tightly connected with the heating sleeve part 6 in a sealing manner by adopting an O-shaped ring and a bolt.

Referring to fig. 1, the steam passage part 5 includes a steam inlet cylinder 51, an inner extension pipe 52, a steam inlet 53, and a second purge port 54; the inner extension pipe 52 is positioned inside the steam inlet cylinder 51, the input end of the inner extension pipe 52 is communicated with the steam inlet 53, and the output end of the inner extension pipe 52 is communicated with the plurality of steam heat exchange pipes 2; a second purge port 54 is provided at the bottom of the steam inlet drum 51. In the embodiment of the application, a partition plate is arranged at one end, close to the steam heat exchange tubes 2, of the steam inlet cylinder 51, the steam heat exchange tubes 2 penetrate through the partition plate to enter the steam inlet cylinder 51 and are communicated with the inner extension tube 52, the inner extension tube 52 is an L-shaped thick tube, the input end of the L-shaped thick tube is communicated with the steam inlet 53, the output end of the L-shaped thick tube is a closed end, the input ends of the steam heat exchange tubes 2 are inserted into the closed end of the L-shaped thick tube and are sealed through an O-shaped ring, and the inner extension tube 52 can also be a plurality of thin L-shaped tubes, so that the output end of each thin L-shaped tube is communicated with each steam heat exchange tube 2 in a sealing manner; the end of the steam inlet cylinder 51 close to the steam heat exchange pipe 2 is fixedly connected with the heating sleeve part 6 through a flange 7, and the end of the steam inlet cylinder 51 away from the heating sleeve 3 is a closed end.

Referring to fig. 1, the heating jacket part 6 includes a connection cylinder 61, a tube plate 62, and a condensate discharge port 63; the connecting cylinder 61 is fixedly connected with the steam channel part 5; the tube plate 62 is fixedly connected to the end part of the connecting cylinder 61 departing from the steam channel part 5 and is fixedly connected with the material cylinder part 1; the end parts of the plurality of sleeves 3 and the plurality of steam heat exchange tubes 2 extending out of the material barrel part 1 penetrate through the tube plate 62, and the sleeves 3 are connected with the tube plate 62 in a sealing mode. The connecting cylinder 61 deviates from in the embodiment of the application the one end of tube sheet 62 is provided with flange 7, carry out fixed connection with the flange 7 that steam got into a section of thick bamboo 51, go on sealing connection through "O" type circle and bolt between connecting cylinder 61 and the steam entering section of thick bamboo 51, expand through intensity between tube sheet 62 and the sleeve pipe 3 and weld and be connected, the bottom welding comdenstion water discharge port 63 of connecting cylinder 61, sleeve pipe 3 stretches out to in the connecting cylinder 61 from barrel 11 is inside, the comdenstion water condenses and finally discharges to in the connecting cylinder 61 from the open end of sleeve pipe 3 in the gap between sleeve pipe 3 and the steam heat exchange tube 2, discharge outside through comdenstion water discharge port 63.

Referring to fig. 1, a reinforcing beam 41 is fixedly connected between the plurality of supports 4, and the reinforcing beam 41 is fixedly connected to the inner surface of the barrel 11.

The working principle of the horizontal bayonet steam heater provided by the embodiment of the application is as follows:

high-temperature steam is continuously input from a steam inlet 53, the steam enters a plurality of steam heat exchange tubes 2 through an inner extension tube 52 and then enters a cylinder body 11 through a connecting cylinder 61, meanwhile, a material (liquid) is input from a material inlet 12, the material is accumulated and ascended in the cylinder body 11 and exchanges heat with the steam heat exchange tubes 2 and a sleeve 3, the material ascends to a material outlet 13 after heat exchange is completed and overflows out of the cylinder body 11 to realize heating of the material, meanwhile, the steam runs from the input end of the steam heat exchange tube 2 to the output end of the steam heat exchange tube 2 and then leaves from a steam outlet 21 and enters the sleeve 3, finally, after being condensed in a gap between the sleeve 3 and the steam heat exchange tube 2, the steam flows out of the cylinder body 11 from the opening end (namely, the end extending out of the cylinder body 11) and enters the connecting cylinder 61, is collected in the connecting cylinder 61 and finally discharged through a condensed water outlet 63, steam is continuously input from the steam inlet 53, and condensed water is continuously discharged from the condensed water outlet 63, so that the heat exchange of the steam to the material through the steam heat exchange pipe 2 is realized.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.

Claims (9)

1. A horizontal bayonet steam heater is characterized by comprising a material cylinder part (1), a plurality of steam heat exchange tubes (2), a plurality of sleeves (3) and a plurality of supporting pieces (4);

the plurality of sleeve pipes (3) are respectively sleeved with the plurality of steam heat exchange pipes (2), and a gap exists between each sleeve pipe (3) and each steam heat exchange pipe (2);

the steam heat exchange tubes (2) and the sleeves (3) extend into the material barrel body (1), the end part of each steam heat exchange tube (2) extending into the material barrel body (1) is an open end, and the end part of each sleeve (3) extending into the material barrel body (1) is a closed end;

the steam input end of the steam heat exchange pipe (2) and the open end of the sleeve (3) extend out of the material barrel body part (1);

the supporting pieces (4) are arranged inside the material barrel body part (1) at intervals and connected with the sleeves (3) to support the sleeves (3).

2. The horizontal bayonet steam heater of claim 1, wherein the material barrel (1) comprises a barrel (11), a material inlet (12), a material outlet (13) and a first drain port (14);

the top end of the cylinder body (11) is provided with the material inlet (12), the part of the cylinder body (11) higher than the sleeve (3) is provided with the material outlet (13), and the bottom of the cylinder body (11) is provided with the first discharge port (14);

one end of the cylinder body (11) is a head sealing end, and the end part of the cylinder body (11) deviating from the head sealing end is communicated with and extends into the steam heat exchange tubes (2) and the sleeves (3) in a plurality, and is in sealing connection with the sleeves (3).

3. The horizontal bayonet steam heater according to claim 2, wherein a plurality of the supporting members (4) are fixedly connected to the inner side surface of the cylinder (11) with a gap from the bottom surface of the cylinder (11), and a plurality of the sleeves (3) are all penetrated through the plurality of the supporting members (4) and fixedly connected with the plurality of the supporting members (4).

4. The horizontal bayonet steam heater according to claim 1, characterized in that the circumferential side of the end of the steam heat exchange tube (2) close to the closed end of the sleeve (3) is provided with a plurality of steam outlets (21) for allowing steam to enter the gap between the sleeve (3) and the steam heat exchange tube (2) from the steam heat exchange tube (2) and forming condensed water to be discharged from the open end of the sleeve (3).

5. The horizontal bayonet steam heater according to claim 1, characterized in that a plurality of buffers (22) are arranged on the outer side of the steam heat exchange tube (2), and a plurality of buffers (22) are arranged in the gap between the sleeves (3) of the steam heat exchange tube (2); the output end of the steam heat exchange tube (2) is provided with a tube support (23), and the tube support (23) is arranged inside the sleeve (3) and fixedly connected with the sleeve (3).

6. The horizontal bayonet steam heater of claim 2, further comprising a steam channel portion (5) and a heating jacket portion (6);

two ends of the heating sleeve part (6) are respectively fixedly connected with the steam channel part (5) and the material barrel part (1);

the end part of the sleeve (3) extending out of the material barrel part (1) extends into the heating sleeve part (6), and the end part of the steam heat exchange pipe (2) extending out of the material barrel part (1) penetrates through the heating sleeve part (6) and extends into the steam channel part (5).

7. The horizontal bayonet steam heater of claim 6, wherein the steam channel portion (5) comprises a steam inlet cylinder (51), an inner extension pipe (52), a steam inlet (53) and a second purge port (54);

the inner extension pipe (52) is positioned inside the steam inlet cylinder (51), the input end of the inner extension pipe (52) is communicated with the steam inlet (53), and the output end of the inner extension pipe (52) is communicated with the plurality of steam heat exchange pipes (2);

the second drain port (54) is arranged at the bottom of the steam inlet cylinder (51).

8. The horizontal bayonet steam heater according to claim 6, wherein the heating jacket portion (6) comprises a connecting cylinder (61), a tube plate (62) and a condensate drain outlet (63);

the connecting cylinder (61) is fixedly connected with the steam channel part (5);

the tube plate (62) is fixedly connected to the end part, away from the steam channel part (5), of the connecting cylinder (61) and is fixedly connected with the material cylinder part (1);

the end parts of the plurality of sleeves (3) and the plurality of steam heat exchange tubes (2) extending out of the material barrel part (1) are all communicated with the tube plate (62), and the sleeves (3) are connected with the tube plate (62) in a sealing mode.

9. The horizontal bayonet steam heater according to claim 3, wherein a reinforcing beam (41) is fixedly connected between the plurality of supports (4), and the reinforcing beam (41) is fixedly connected to the inner side surface of the barrel (11).

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