High-heat-conducting vapor seal pressure-stabilized shaft seal heater

Abstract

The application discloses a high-heat-conducting steam seal pressure-stable type shaft seal heater and belongs to the technical field of shaft seal heaters. The high-heat-conducting steam seal pressure-stable type shaft seal heater is characterized by the following: the flat heat-conducting water pipe is arranged, when the condensed water is delivered to the heat-conducting water pipe from the water inlet pipe through the special-shaped communicating vessel, a certain pressure reduction effect is achieved, the flow rate of the condensed water in the heat-conducting water pipe is reduced, the contact area of the hot steam and the outer wall of the heat-conducting water pipe is increased, the first half partition plate and the second half partition plate are arranged in a staggered mode, the contact area of the hot steam and the outer wall of the heat-conducting water pipe is further increased, the overall heat conduction effect is improved, the base is arranged, the shaft seal heater body can be fixedly installed on the base table, the lifting mechanism is arranged, the height of the shaft seal heater body can be manually adjusted, the butt joint pipeline can be installed at a suitable height, and the use is more flexible and convenient.

Description

Technical Field

[0001] This invention relates to the field of shaft seal heater technology, and more particularly to a high thermal conductivity steam seal pressure-stabilized shaft seal heater. Background Technology

[0002] A shaft seal heater is a device that recovers leaking steam from shaft seals and uses its heat to heat condensate, reducing energy loss and improving unit thermal efficiency. When a steam turbine adopts an internal leakage shaft seal system, a shaft seal heater (shaft seal cooler) is generally installed to heat condensate or demineralized water, recover leaking steam from the high-pressure cylinder shaft seals, thereby reducing shaft seal leakage and heat loss, and improving the environmental conditions in the workshop.

[0003] During operation, the return steam from the shaft seal heater is supplied to the shaft seal of the low-pressure cylinder through the steam seal pipeline to achieve steam sealing. However, the amount of return steam from the shaft seal heater varies with the load. Moreover, even when the load is stable, the amount of return steam from the shaft seal heater is often not very stable. This results in a large variation in the return steam from the shaft seal heater, which can easily lead to steam loss or steam seal tearing in the low-pressure cylinder. The aforementioned situation leads to even lower resistance to steam return from the shaft seal heater. This is equivalent to increasing the steam return volume of the shaft seal heater (similar to opening the low-pressure cylinder shaft seal steam return valve too wide), preventing the steam supply to the shaft seal heater from effectively filling the low-pressure cylinder shaft seal, creating a gap, resulting in poor sealing and air leakage. Furthermore, when the hot steam leaking from the high-pressure cylinder shaft seal heats the condensate, the existing shaft seal heater has a small contact area and short contact time between the hot steam and condensate, resulting in poor heat conduction. Additionally, the existing shaft seal heater base is a one-piece structure with a fixed height, which results in a fixed position of the shaft seal heater's pipe inlet. During actual installation, a certain height difference can easily occur between the pipe inlet and the inlet when the shaft seal heater is installed on the base platform, affecting the connection, installation, and use of the shaft seal heater. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing toothbrush holders, the present invention is proposed.

[0006] Therefore, the technical problem to be solved by the present invention is that when the shaft seal heater is installed on the base platform, there is a certain height difference between the pipe opening and the inlet pipe opening, which affects the connection, installation and use of the shaft seal heater.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high thermal conductivity steam seal pressure-stabilizing shaft seal heater, comprising,

[0008] The shaft seal heater body includes an inlet pipe and an outlet pipe. Multiple staggered first and second half-partitions are fixedly connected to the inner wall of the shaft seal heater body. A hot water pipe is fixedly inserted into the interior of each of the multiple first and second half-partitions, and both ends of the hot water pipe are connected to the outlet pipe and the inlet pipe respectively via a shaped connector.

[0009] The reflux mechanism includes an inlet steam pipe and an outlet steam pipe that are interconnected at the top of the shaft seal heater body. A first valve is installed on the outlet steam pipe. A return steam pipe is interconnected on the outer wall of the outlet steam pipe. A pressure sensor is installed on the return steam pipe. A make-up steam pipe is interconnected on the outer wall of the return steam pipe. A second valve is installed on the make-up steam pipe. A U-shaped exhaust steam pipe is installed at the top of the outlet steam pipe, and the end of the U-shaped exhaust steam pipe away from the outlet steam pipe faces downward. The reflux mechanism is located at the top of the shaft seal heater body.

[0010] The base includes two bottom fixing plates fixedly connected to the bottom of the shaft seal heater body. A fixing sleeve is slidably sleeved on the periphery of the bottom fixing plate. A base plate is fixedly connected to the bottom of the fixing sleeve. The base is connected to an auxiliary support mechanism through a lifting mechanism.

[0011] As a further embodiment of the present invention: the lifting mechanism includes a threaded support rod rotatably connected to the inner wall of the bottom of the fixed sleeve, a platform sleeve fixedly connected to the outer wall of the two fixed sleeves, and a connecting sleeve fixedly connected between the two platform sleeves.

[0012] It also includes a motor and a one-way threaded rod. The output shaft of the motor is fixedly connected to a rotating shaft. One end of the one-way threaded rod is connected to the rotating shaft through a first bevel gear transmission assembly. The other end of the one-way threaded rod passes through the base cylinder and is connected to the bottom periphery of the threaded support rod through a second bevel gear transmission assembly.

[0013] As a further aspect of the present invention: the auxiliary support mechanism includes a bidirectional threaded rod rotatably connected between two base cylinders, and the bidirectional threaded rod is connected to a unidirectional threaded rod through a gear disk transmission assembly. The outer periphery of the bidirectional threaded rod is connected to two threaded sleeves, and the top of the threaded sleeves is rotatably connected to a transition support rod. The top of the transition support rod is rotatably connected to the bottom of the shaft seal heater body.

[0014] An open support box is provided below the connecting cylinder. A sliding plate is slidably connected inside the open support box. Multiple springs are fixedly connected between the sliding plate and the bottom inner wall of the open support box. A second threaded sleeve is threadedly connected to the outer side of the one-way threaded rod. A transition pressure rod is rotatably connected to the outer wall of the second threaded sleeve. The other end of the transition pressure rod is rotatably connected to the top of the sliding plate.

[0015] As a further aspect of the present invention: the bottom of the second half partition is provided with multiple water-permeable holes.

[0016] As a further aspect of the present invention: a drainage mechanism is provided inside the shaft seal heater body. The drainage mechanism includes a level gauge fixedly installed on the inner wall of the bottom of the shaft seal heater body. A drain pipe is fixedly inserted into the back wall of the shaft seal heater body, and the outer end of the drain pipe is connected to an external water pumping assembly.

[0017] As a further embodiment of the present invention: the end of the water inlet pipe away from the irregular connector is connected to the condenser output pipe; the end of the water outlet pipe away from the irregular connector is connected to the condensate pipe; the end of the return steam pipe away from the steam outlet pipe is connected to the steam seal assembly pipe; and the end of the make-up steam pipe away from the return steam pipe is connected to the external steam supply equipment.

[0018] As a further embodiment of the present invention: the bottom fixing plate has a threaded hole inside, and the top end of the threaded support rod is threaded into the threaded hole.

[0019] As a further embodiment of the present invention: the base plate is fixed to the base platform by fixing bolts, and a plurality of triangular stabilizing blocks are fixedly connected to the top of the base plate, and the other right-angled side of the triangular stabilizing block is fixed to the side wall of the fixing sleeve.

[0020] As a further aspect of the present invention: two rectangular guide holes are provided at the top of the connecting cylinder, and two adapter support rods pass through the two rectangular guide holes respectively.

[0021] As a further aspect of the present invention: auxiliary positioning sleeves are rotatably connected to both ends of the one-way threaded rod, and auxiliary positioning blocks are fixedly connected to the outer wall of the auxiliary positioning sleeves, and the auxiliary positioning blocks are fixed to the inner wall of the connecting cylinder.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting a flat hot water pipe, when the condensate is transported from the inlet pipe to the hot water pipe through the irregularly shaped connector, it plays a certain pressure reduction role, reduces the flow rate of the condensate in the hot water pipe, and increases the contact area between the hot steam and the outer wall of the hot water pipe. At the same time, by setting the first half-partition and the second half-partition in an alternating manner, the contact area between the hot steam and the outer wall of the hot water pipe is further increased, thereby improving the overall heat conduction effect.

[0023] In the device of this invention, the first valve and the second valve are normally closed. By setting a pressure sensor, the return steam pressure in the return steam pipe can be monitored in real time. When the return steam pressure is lower than the set standard value, the second valve is opened, and the external steam supply equipment supplements the return steam into the return steam pipe through the make-up steam pipe to ensure the return steam pressure required for steam sealing. When the return steam pressure is higher than the set standard value, the first valve is opened to discharge the excess return steam through the U-shaped exhaust pipe, thereby avoiding excessive return steam pressure from affecting the steam sealing effect.

[0024] The shaft seal heater body can be fixedly installed on the base platform by setting a base, and the height of the shaft seal heater body can be manually adjusted by setting a lifting mechanism to adjust it to a suitable height for installation and connection of pipelines, making it more flexible and convenient to use. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0026] Figure 1 This is a front three-dimensional structural diagram of a high thermal conductivity steam seal pressure-stabilized shaft seal heater according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the back three-dimensional structure of a high thermal conductivity steam seal pressure-stabilized shaft seal heater according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the shaft seal heater body in an embodiment of the present invention.

[0029] Figure 4 This is a front view sectional view of the fixed sleeve and connecting sleeve in an embodiment of the present invention.

[0030] Figure 5 This is a top-view cross-sectional view of the fixed sleeve and connecting sleeve in an embodiment of the present invention.

[0031] Figure 6 This is a three-dimensional structural diagram of the reflux mechanism in a high thermal conductivity steam seal pressure-stabilized shaft seal heater according to an embodiment of the present invention. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth.

[0035] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0036] Example 1

[0037] like Figure 1-3 and Figure 6 As shown, the present invention provides a technical solution: a high thermal conductivity steam seal pressure-stabilized shaft seal heater, comprising a shaft seal heater body 100, and a reflux mechanism 300 disposed on the top of the outer shell 100; the reflux mechanism 300 includes an inlet pipe 308 and an outlet pipe 301 interconnected on the top of the shaft seal heater body 100, a first valve 303 installed on the outlet pipe 301, a return steam pipe 304 interconnected on the outer wall of the outlet pipe 301, a pressure sensor 305 installed on the return steam pipe 304, and a make-up steam pipe 306 interconnected on the outer wall of the return steam pipe 304, for making up steam... A second valve 307 is installed on the pipe 306; the shaft seal heater body 100 includes an inlet pipe 101 and an outlet pipe 102. Multiple staggered first half-partitions 106 and second half-partitions 105 are fixedly connected to the inner wall of the shaft seal heater body 100. A hot water pipe 103 is fixedly inserted into the interior of the multiple first half-partitions 106 and second half-partitions 105. The two ends of the hot water pipe 103 are connected to the outlet pipe 102 and the inlet pipe 101 respectively through a shaped connector 104. A drainage mechanism 200 is provided inside the shaft seal heater body 100.

[0038] Furthermore: A U-shaped exhaust pipe 302 is installed at the top of the steam outlet pipe 301, and the end of the U-shaped exhaust pipe 302 away from the steam outlet pipe 301 faces downwards. By installing the U-shaped exhaust pipe 302 and setting the steam outlet of the U-shaped exhaust pipe 302 downwards, dust and impurities can be prevented from falling into the interior of the shaft seal heater body 100, while avoiding blockage of the steam outlet. Multiple water-permeable holes 107 are provided at the bottom of the second half-partition 105. The drainage mechanism 200 includes a level gauge 201 fixedly installed on the inner wall of the bottom of the shaft seal heater body 100. A drain pipe 202 is fixedly inserted into the back wall of the shaft seal heater body 100, and the outer end of the drain pipe 202 is connected to an external water pumping assembly. The end of the water inlet pipe 101 away from the irregular-shaped connector 104 is connected to the condenser output pipe, and the water outlet pipe 102... One end of the pipe away from the irregular connector 104 is connected to the condensate pipe, and the end of the return steam pipe 304 away from the steam outlet pipe 301 is connected to the steam seal assembly pipe. The end of the make-up steam pipe 306 away from the return steam pipe 304 is connected to the external steam supply equipment. While the hot steam leaking from the high-pressure cylinder shaft seal heats the condensate, some of the water vapor liquefies into water droplets and falls to the bottom inner wall of the shaft seal heater body 100. By setting the water permeable hole 107, the water droplets can be connected and collected on the bottom inner wall of the shaft seal heater body 100. Under the monitoring of the level gauge 201, when the collected water droplet level reaches the set value, the external water pumping component works to extract the water droplets collected at the bottom of the shaft seal heater body 100 from the inside of the shaft seal heater body 100. The extracted water can be transported to the subsequent main pipe of the condensate along with the water outlet pipe 102.

[0039] In this embodiment, condensate is first transported from the condenser output pipe to the inlet pipe 101, then through the right-side irregular connector 104 to the hot water pipe 103, and then through the left-side irregular connector 104 to the outlet pipe 102 for discharge to the subsequent condensate pipeline. By setting the flat hot water pipe 103, the condensate is pressure-reduced when it is transported from the inlet pipe 101 through the irregular connector 104 to the hot water pipe 103 in the water supply pipeline, reducing the flow rate of the condensate in the hot water pipe 103 and increasing the contact area between the hot steam and the outer wall of the hot water pipe 103. At the same time, the hot steam leaking from the high-pressure cylinder shaft seal is transported through the pipeline to the steam inlet pipe 308, and then enters the interior of the shaft seal heater body 100 through the steam inlet pipe 308. The steam is then discharged through the staggered first half-partition 106 and the second half-partition 106. The baffle 105 further increases the contact area between the hot steam and the outer wall of the hot water pipe 103, improving the overall heat conduction effect. The heated water vapor is output from the steam outlet pipe 301 and then transported to the steam seal assembly through the return steam pipe 304 to achieve steam seal for the low-pressure cylinder shaft seal. In the device of this invention, the first valve 303 and the second valve 307 are normally closed. By setting the pressure sensor 305, the return steam pressure in the return steam pipe 304 can be monitored in real time. When the return steam pressure is lower than the set standard value, the second valve 307 is opened, and the external steam supply equipment supplements the return steam into the return steam pipe 304 through the supplementary steam pipe 306 to ensure the return steam pressure required for steam seal. When the return steam pressure is higher than the set standard value, the first valve 303 is opened to discharge the excess return steam through the U-shaped exhaust pipe 302, thereby avoiding excessive return steam pressure from affecting the steam seal effect.

[0040] Example 2

[0041] Combined with appendix Figure 1 , Figure 2 It is concluded that: the bottom of the shaft seal heater body 100 is provided with a base 400, the base 400 includes two bottom fixing plates 401 fixedly connected to the bottom of the shaft seal heater body 100, the outer periphery of the bottom fixing plate 401 is slidably fitted with a fixing sleeve 402, the bottom of the fixing sleeve 402 is fixedly connected with a base plate 403; the base plate 403 is fixed to the base platform by fixing bolts 404, and the top of the base plate 403 is fixedly connected with multiple triangular stabilizing blocks 405, and the other right-angle side of the triangular stabilizing block 405 is fixed to the side wall of the fixing sleeve 402.

[0042] In this embodiment: the fixing bolt 404 serves to connect the fixing base plate 403 and the base platform, and the triangular stabilizing block 405 serves to provide stable support, thus ensuring the structural stability of the support.

[0043] Example 3

[0044] Combined with appendix Figure 1 , Figure 4 , Figure 5 Therefore, the following conclusions are drawn: Lifting mechanism 500: Lifting mechanism 500 includes a threaded support rod 509 rotatably connected to the inner wall of the bottom of the fixed sleeve 402, a platform cylinder 501 fixedly connected to the outer wall of the two fixed sleeves 402, a connecting cylinder 502 fixedly connected between the two platform cylinders 501, a motor 510 and a one-way threaded rod 506, the output shaft of the motor 510 is fixedly connected to a rotating shaft 505, one end of the one-way threaded rod 506 is connected to the rotating shaft 505 through a first bevel gear transmission assembly 507, and the other end of the one-way threaded rod 506 passes through the platform cylinder 501 and is connected to the bottom periphery of the threaded support rod 509 through a second bevel gear transmission assembly 508.

[0045] In this embodiment: auxiliary positioning sleeves 503 are rotatably connected to the outer periphery of both ends of the one-way threaded rod 506. An auxiliary positioning block 504 is fixedly connected to the outer wall of the auxiliary positioning sleeve 503, and the auxiliary positioning block 504 is fixed to the inner wall of the connecting cylinder 502. It should be noted that the top wall of the connecting cylinder 502 is preferably equipped with a bearing, and the inner ring of the bearing is fixedly sleeved on the outer periphery of the top end of the rotating shaft 505, which can play a role in auxiliary positioning of the rotating shaft 505.

[0046] The working principle of this invention is as follows: First, the shaft seal heater body 100 is installed on the base platform via the base 400. Then, the height of the shaft seal heater body 100 is adjusted appropriately according to the height difference of the pipeline installation. The motor 510 drives the rotating shaft 505 to rotate. The rotation of the rotating shaft 505 drives the two one-way threaded rods 506 to rotate synchronously under the transmission of the first bevel gear transmission assembly 507. The synchronous rotation of the two one-way threaded rods 506 drives the two threaded support rods 509 to rotate synchronously under the transmission of the second bevel gear transmission assembly 508. The synchronous rotation of the two threaded support rods 509 drives the two bottom fixing plates 401 to rise and fall synchronously, thereby adjusting the height of the shaft seal heater body 100.

[0047] Auxiliary support mechanism 600: A bidirectional threaded rod 602 is rotatably connected between two base cylinders 501, and the bidirectional threaded rod 602 is connected to a unidirectional threaded rod 506 via a gear transmission assembly 604. Two threaded sleeves 603 are threadedly connected to the outer periphery of the bidirectional threaded rod 602. A transition support rod 601 is rotatably connected to the top of the threaded sleeves 603, and the top of the transition support rod 601 is rotatably connected to the bottom of the shaft seal heater body 100. An open-top support box 605 is provided below the connecting cylinder 502. A sliding carrier plate 606 is slidably connected inside the open-top support box 605. Multiple springs 607 are fixedly connected between the sliding carrier plate 606 and the bottom inner wall of the open-top support box 605. A second threaded sleeve 609 is threadedly connected to the outer periphery of the unidirectional threaded rod 506. A transition lower pressure rod 608 is rotatably connected to the outer wall of the second threaded sleeve 609, and the other end of the transition lower pressure rod 608 is rotatably connected to the top of the sliding carrier plate 606.

[0048] In the lifting mechanism, the threaded support rod 509 and the threaded holes inside the bottom fixed plate 401 bear a large load-bearing pressure. To reduce this load-bearing pressure and ensure the lifting stability of the shaft seal heater body 100, an auxiliary support mechanism 600 is provided. During operation, the motor 510 drives the rotating shaft 506 to rotate, which, under the transmission of the gear disc transmission assembly 604, synchronously drives the two bidirectional threaded rods 602 to rotate. The rotation of the bidirectional threaded rods 602 drives the two threaded sleeves 603 to move closer to or further away from each other, thus providing further auxiliary support to the shaft seal heater body 100 under the action of the transition support rod 601. At the same time, the rotation of 506 drives the two second threaded sleeves 609 to move closer to or further away from each other. Under the compression force of the spring 607, the support force of the coverless support box 605 from the bottom is transmitted to the upper platform cylinder 501 and connecting cylinder 502 through the compression force, providing further auxiliary support. This makes the lifting process more stable.

[0049] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0050] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0051] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A high thermal conductivity steam seal pressure-stabilizing shaft seal heater, characterized in that: include, The shaft seal heater body (100) includes an inlet pipe (101) and an outlet pipe (102). The inner wall of the shaft seal heater body (100) is fixedly connected with a plurality of staggered first half partitions (106) and second half partitions (105). The interior of the plurality of first half partitions (106) and second half partitions (105) is fixedly connected with a hot water pipe (103). The two ends of the hot water pipe (103) are connected to the outlet pipe (102) and the inlet pipe (101) respectively through a shaped connector (104). The reflux mechanism (300) includes an inlet pipe (308) and an outlet pipe (301) interconnected at the top of the shaft seal heater body (100). A first valve (303) is installed on the outlet pipe (301). A return pipe (304) is interconnected to the outer wall of the outlet pipe (301). A pressure sensor (305) is installed on the return pipe (304). A make-up pipe (306) is interconnected to the outer wall of the return pipe (304). A second valve (307) is installed on the make-up pipe (306). A U-shaped exhaust pipe (302) is installed at the top of the outlet pipe (301), with the end of the U-shaped exhaust pipe (302) facing downwards away from the outlet pipe (301). The reflux mechanism (300) is located at the top of the shaft seal heater body (100). The base (400) includes two bottom fixing plates (401) fixedly connected to the bottom of the shaft seal heater body (100) and a fixing sleeve (402) slidably sleeved on the periphery of the bottom fixing plates (401). The bottom of the fixing sleeve (402) is fixedly connected to a base plate (403), and the base (400) is connected to an auxiliary support mechanism (600) through a lifting mechanism (500). The auxiliary support mechanism (600) includes a bidirectional threaded rod (602) rotatably connected between two base cylinders (501), and the bidirectional threaded rod (602) is connected to a unidirectional threaded rod (506) through a gear transmission assembly (604). The outer thread of the bidirectional threaded rod (602) is connected to two threaded sleeves (603), and the top of the threaded sleeves (603) is rotatably connected to a transition support rod (601). The top of the transition support rod (601) is rotatably connected to the bottom of the shaft seal heater body (100). Below the connecting cylinder (502) is an open support box (605), inside which a sliding plate (606) is slidably connected, and multiple springs (607) are fixedly connected between the sliding plate (606) and the bottom inner wall of the open support box (605). The outer side of the one-way threaded rod (506) is threadedly connected to a second threaded sleeve (609), and the outer wall of the second threaded sleeve (609) is rotatably connected to a transition pressure rod (608). The other end of the transition pressure rod (608) is rotatably connected to the top of the sliding plate (606). The bottom of the second half partition (105) is provided with multiple water-permeable holes (107).

2. The high thermal conductivity steam seal pressure-stabilizing shaft seal heater according to claim 1, characterized in that: The lifting mechanism (500) includes a threaded support rod (509) rotatably connected to the inner wall of the bottom of the fixed sleeve (402), a base sleeve (501) fixedly connected to the outer wall of the two fixed sleeves (402), and a connecting sleeve (502) fixedly connected between the two base sleeves (501). It also includes a motor (510) and a one-way threaded rod (506). The output shaft of the motor (510) is fixedly connected to a rotating shaft (505). One end of the one-way threaded rod (506) is connected to the rotating shaft (505) through a first bevel gear transmission assembly (507). The other end of the one-way threaded rod (506) passes through the base cylinder (501) and is connected to the bottom periphery of the threaded support rod (509) through a second bevel gear transmission assembly (508).

3. A high thermal conductivity steam seal pressure-stabilizing shaft seal heater according to claim 1 or 2, characterized in that: The shaft seal heater body (100) is provided with a drainage mechanism (200). The drainage mechanism (200) includes a level gauge (201) fixedly installed on the inner wall of the bottom of the shaft seal heater body (100). A drain pipe (202) is fixedly inserted into the back wall of the shaft seal heater body (100), and the outer end of the drain pipe (202) is connected to an external water pumping assembly.

4. A high thermal conductivity steam seal pressure-stabilizing shaft seal heater according to claim 3, characterized in that: The end of the inlet pipe (101) away from the irregular connector (104) is connected to the condenser output pipe; the end of the outlet pipe (102) away from the irregular connector (104) is connected to the condensate pipe; the end of the return steam pipe (304) away from the outlet steam pipe (301) is connected to the steam seal assembly pipe; and the end of the make-up steam pipe (306) away from the return steam pipe (304) is connected to the external steam supply equipment.

5. A high thermal conductivity steam seal pressure-stabilizing shaft seal heater according to claim 1 or 2, characterized in that: The bottom fixing plate (401) has a threaded hole inside, and the top end of the threaded support rod (509) is threaded into the threaded hole.

6. A high thermal conductivity steam seal pressure-stabilizing shaft seal heater according to claim 5, characterized in that: The base plate (403) is fixed to the base platform by fixing bolts (404). Multiple triangular stabilizing blocks (405) are fixedly connected to the top of the base plate (403), and the other right-angled side of the triangular stabilizing block (405) is fixed to the side wall of the fixing sleeve (402).

7. A high thermal conductivity steam seal pressure-stabilizing shaft seal heater according to claim 1 or 2, characterized in that: The top of the connecting cylinder (502) has two rectangular guide holes, and two adapter support rods (601) pass through the two rectangular guide holes respectively.

8. A high thermal conductivity steam seal pressure-stabilizing shaft seal heater according to claim 7, characterized in that: The two ends of the one-way threaded rod (506) are rotatably connected to auxiliary positioning sleeves (503), and the outer wall of the auxiliary positioning sleeves (503) is fixedly connected to auxiliary positioning blocks (504), and the auxiliary positioning blocks (504) are fixed to the inner wall of the connecting cylinder (502).

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