CN220082825U - Constant heating device for gas replacement steel cylinder - Google Patents

Abstract

The utility model discloses a constant heating device of a gas replacement steel cylinder, which comprises: the steel bottle heating cabinet body, a plurality of gas steel bottle, steam supply control assembly and exhaust control assembly, the steel bottle heating cabinet body has steam inlet, heat transfer room, condensation chamber, a plurality of steam inlet and a plurality of exhaust hole, and at least part of gas steel bottle is established in the heat transfer is indoor, and steam supply control assembly includes steam pipe, pressure control valve and temperature-sensing valve, and steam pipe's lumen and steam inlet intercommunication, exhaust control assembly include steam pipe and fan, steam pipe's lumen and condensation chamber intercommunication, and the fan is established on the steam pipe. The gas cylinder body is heated at constant temperature by taking hot steam as a heat source, so that the problems of manual whole participation and passive civilized production caused by manual pouring of the steel cylinder in the related technology are solved, and the potential safety hazard caused by an electric heating mode to a hydrogen system is effectively avoided.

Description

Constant heating device for gas replacement steel cylinder

Technical Field

The utility model relates to the technical field of gas replacement, in particular to a constant-temperature device of a gas replacement steel cylinder.

Background

The large-scale thermal power generating unit basically uses hydrogen as a cooling medium, the hydrogen is inflammable and explosive gas, and the gas in the generator needs to be replaced by an intermediate medium such as carbon dioxide and nitrogen before and after long-term shutdown or overhaul of the generator.

When the steel bottled gas is used as a preferable product in a large amount in various power generation enterprises, in the process of replacing the gas in the machine by using the steel bottle gas, the heat in the ambient air is required to be continuously absorbed in the process of releasing and converting the high-pressure liquid gas in the bottle into a gas state, so that the water vapor in the ambient air releases heat and is condensed into frost or even ice in the body of the steel bottle, the conversion efficiency and speed of the gas in the bottle from the liquid state to the gas state are seriously hindered, and the replacement work of the gas in the machine is even influenced.

In the related art, a large amount of cold water is used for pouring the steel cylinder or an electric heating blanket is laid on the surface of the steel cylinder to heat the steel cylinder, but the cold water is used for pouring the steel cylinder, so that the efficiency is low, manual whole participation is needed, a large amount of water flows to the ground to influence the civilized production of the surrounding environment, and the manner of laying the electric heating blanket can cause potential safety hazards to a generator hydrogen system.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the utility model provides a constant heating device for a gas replacement steel cylinder, which uses hot steam as a heat source to heat the body of the gas steel cylinder and has the characteristics of safety, high efficiency and flexible treatment.

The constant heating device of the gas replacement steel cylinder comprises: the steel bottle heating cabinet body, a plurality of gas steel bottle, steam supply control assembly and exhaust control assembly, the steel bottle heating cabinet body has steam inlet chamber, heat transfer room, condensation chamber and will the steam inlet chamber with a plurality of steam inlet holes of heat transfer room intercommunication, will the heat transfer room with a plurality of steam exhaust holes of condensation chamber intercommunication, at least part of gas steel bottle is established in the heat transfer room, steam supply control assembly includes steam pipe, pressure control valve and temperature-sensing valve, the lumen of steam pipe with the steam inlet chamber intercommunication, pressure control valve with the temperature-sensing valve is established in proper order along the direction of upper reaches to low reaches on the steam pipe, pressure control valve's pressure probe is established on gas displacement system's intake pipe way, temperature-sensing valve's temperature probe is established in the heat transfer room, the steam control assembly includes steam pipe and fan, the lumen of steam pipe with the condensation chamber intercommunication, the fan is established on the steam pipe.

According to the constant heating device for the gas replacement steel cylinder, hot steam enters the steam inlet chamber through the steam pipe under the control of the pressure control valve and the temperature control valve, then enters the heat exchange chamber through the steam inlet hole, the body of the gas steel cylinder is heated, and exhaust steam after heat exchange is discharged to the atmosphere through the condensing chamber and the steam exhaust pipe under the suction effect of the fan. The constant-temperature heating device has the advantages that the body of the gas steel cylinder is heated at a constant temperature by taking hot steam as a heat source, the problems that the efficiency of pouring the steel cylinder by using cold water is low and the civilized production is influenced in the related art are solved, and the problems of electric shock risks and potential safety hazards existing in the prior art that an electric heating blanket is laid on the surface of the steel cylinder or the steel cylinder is put into an electric heating box (a plurality of electric heating rods are arranged in the box to heat the air in the box to indirectly heat the body of the steel cylinder) are also effectively avoided.

In some embodiments, the cylinder heating cabinet body comprises a steam inlet chamber housing, a heat exchange chamber housing and a condensing chamber housing, wherein the first end of the steam inlet chamber housing is provided with an opening, the first end of the steam inlet chamber housing is connected with the first end surface of the heat exchange chamber housing, the steam inlet is arranged on the first end surface of the heat exchange chamber housing and is communicated with the opening of the steam inlet chamber housing, the steam pipe is connected with the steam inlet chamber housing, the first end of the condensing chamber housing is provided with an opening, the first end of the condensing chamber housing is connected with the second end surface of the heat exchange chamber housing, the steam outlet is arranged on the second end surface of the heat exchange chamber housing and is communicated with the opening of the condensing chamber housing, and the steam pipe is connected with the condensing chamber housing.

In some embodiments, the heat exchange chamber housing comprises a bottom plate, a first side plate, a second side plate, a third side plate, a fourth side plate, and a top cover, wherein the bottom plate, the first side plate, the second side plate, the third side plate, the fourth side plate, and the top cover are connected to form a substantially rectangular parallelepiped heat exchange chamber housing, the steam inlet is provided on the first side plate, and the steam outlet is provided on the second side plate.

In some embodiments, the plurality of steam inlets are located at a portion of the first side plate away from the second side plate, and the plurality of steam inlets are spaced apart along a height direction of the first side plate and/or a length direction of the first side plate.

In some embodiments, the plurality of steam exhaust holes are spaced apart along the height direction of the second side plate and/or the width direction of the second side plate.

In some embodiments, a plurality of gas cylinders are distributed at intervals along the length direction of the bottom plate, a plurality of through holes are formed in the top cover, the through holes correspond to the gas cylinders one by one, and the gas cylinders penetrate through the through holes.

In some embodiments, the top cover is connected to the first side panel, the top cover being reversible between a first position in which the gas cylinder extends through the through hole and a second position in which the gas cylinder is located outside the through hole.

In some embodiments, the upper end surface of the bottom plate is provided with a plurality of U-shaped fixing pieces, the plurality of U-shaped fixing pieces are in one-to-one correspondence with the plurality of gas cylinders, and the lower ends of the gas cylinders are clamped in the U-shaped fixing pieces.

In some embodiments, the third side panel comprises a first door leaf and a second door leaf, the first door leaf being reversibly connected to the second side panel, the second door leaf being reversibly connected to the fourth side panel.

In some embodiments, the system further comprises a controller, wherein the pressure control valve, the temperature control valve and the fan are all electrically connected with the controller.

Drawings

FIG. 1 is a schematic diagram of a gas displacement cylinder constant temperature apparatus according to an embodiment of the present utility model.

Reference numerals:

steam inlet shell 11, heat exchange shell 12, steam inlet 121, steam outlet 122, through hole 123, U-shaped fixing piece 124, condensing shell 13, gas cylinder 14,

Steam pipe 21, pressure control valve 211, temperature control valve 212,

A steam exhaust pipe 31 and a fan 311.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The following describes a gas displacement cylinder constant heat device according to an embodiment of the present utility model with reference to the accompanying drawings.

As shown in fig. 1, a gas substitution cylinder constant heat device according to an embodiment of the present utility model includes: the steel cylinder heating box body, a plurality of gas steel cylinders 14, a steam supply control assembly and a steam exhaust control assembly.

The cylinder heating box body has a steam inlet chamber, a heat exchange chamber, a condensing chamber, a plurality of steam inlet holes 121 for communicating the steam inlet chamber with the heat exchange chamber, and a plurality of steam outlet holes 122 for communicating the heat exchange chamber with the condensing chamber. At least a portion of the gas cylinder 14 is disposed within the heat exchange chamber, and the portion of the gas cylinder 14 within the heat exchange chamber is subjected to constant heat treatment within the heat exchange chamber.

The steam supply control assembly comprises a steam pipe 21, a pressure control valve 211 and a temperature control valve 212, wherein the pipe cavity of the steam pipe 21 is communicated with the steam inlet chamber, and the pressure control valve 211 and the temperature control valve 212 are sequentially arranged on the steam pipe 21 along the upstream-downstream direction. It is to be understood that the upstream and downstream are defined in terms of the flow direction of the hot steam.

The pressure probe of the pressure control valve 211 is provided in the gas inlet line of the gas substitution system, and is used for detecting the pressure of the gas inlet line of the gas substitution system (i.e., the pressure of the residual gas in the gas cylinder 14). The pressure control valve 211 automatically opens when the gas pressure in the gas inlet line of the gas displacement system is above the minimum pressure required for the gas cylinder 14. The pressure control valve 211 automatically closes when the gas pressure in the gas inlet line of the gas displacement system is below the minimum pressure required by the gas cylinder 14.

The temperature probe of the temperature control valve 212 is disposed in the heat exchange chamber and is used for detecting the temperature of steam in the heat exchange chamber (i.e. the ambient temperature in the heat exchange chamber). The thermostatic valve 212 opens automatically when the temperature in the heat exchange chamber is below the maximum allowable temperature of the gas cylinder 14. When the temperature in the heat exchange chamber reaches the maximum allowable temperature of the gas cylinder 14, the temperature control valve 212 is automatically closed or completely closed, so that the temperature in the heat exchange chamber is kept at a basically constant temperature, and the heat absorption requirement for releasing the high-pressure liquid gas from the gas cylinder 14 is met.

It will be appreciated that the gas cylinder 14 is used in connection with a gas replacement system, such as that provided in the hydrogen-cooled generator set gas replacement operation of the thermal power generation industry. In the process of replacing the gas in the hydrogen-cooled generator set by the gas (carbon dioxide or nitrogen) contained in the gas cylinder 14, the required heat is provided by hot steam, and the hot steam can be from an auxiliary steam system of a thermal power plant or a steam extraction system of a low-pressure area of a steam turbine.

The hot steam enters the steam inlet chamber through the steam pipe 21 and then enters the heat exchange chamber through the steam inlet hole 121, so that the body of the gas steel bottle 14 in the heat exchange chamber is heated, the gas steel bottle 14 is in a constant-heat state, and the condition that the body frosts and freezes is avoided, so that the conversion efficiency and speed of gas in the bottle from liquid state to gas state are influenced.

The exhaust control assembly comprises an exhaust pipe 31 and a fan 311, the pipe cavity of the exhaust pipe 31 is communicated with the condensing chamber, and the fan 311 is arranged on the exhaust pipe 31. The steam after heat exchange in the heat exchange chamber enters the condensation chamber through the steam discharge hole 122, wherein the steam containing waste heat is continuously condensed into liquid water under the action of circulating cooling water, and the rest of exhaust steam is discharged into the atmosphere through the steam discharge pipe 31 under the suction action of the fan 311.

Therefore, the heat exchange device of the gas exchange steel cylinder according to the embodiment of the utility model is characterized in that hot steam enters the steam inlet chamber through the steam pipe 21 under the control of the pressure control valve 211 and the temperature control valve 212, then enters the heat exchange chamber through the steam inlet hole 121, heats the body of the gas steel cylinder 14, and exhaust steam after heat exchange passes through the condensation chamber and is discharged to the atmosphere through the steam discharge pipe 31 under the suction effect of the fan 311. The body of the gas steel cylinder 14 is heated at constant temperature by taking hot steam as a heat source, so that the problems that the efficiency of pouring steel cylinders by using cold water is low and the civilized production is influenced in the related art are solved, and the problems of electric shock risks and potential safety hazards existing in the prior art that an electric heating blanket is laid on the surface of the steel cylinder or the steel cylinder is put into an electric heating box (a plurality of electric heating rods are arranged in the box to heat the air in the box to indirectly heat the body of the steel cylinder) are also effectively avoided.

In addition, the constant heating device for the gas replacement steel cylinder is not only suitable for gas replacement work of a hydrogen-cooled generator set in the thermal power generation industry, but also can be used for gas replacement work of a toxic and harmful gas system and a storage tank which are related to various steel, chemical and logistics storage industries and are carried out by using gas filled in the steel cylinder.

In some embodiments, as shown in fig. 1, the cylinder heating cabinet body includes a steam inlet housing 11, a heat exchange chamber housing 12, and a condensing chamber housing 13.

The first end of the steam inlet chamber housing 11 is provided with an opening, the first end of the steam inlet chamber housing 11 is connected with the first end surface of the heat exchange chamber housing 12, the steam inlet hole 121 is arranged on the first end surface of the heat exchange chamber housing 12 and is communicated with the opening of the steam inlet chamber housing 11, and the steam pipe 21 is connected with the steam inlet chamber housing 11.

The first end of the condensing chamber housing 13 has an opening, the first end of the condensing chamber housing 13 is connected to the second end surface of the heat exchange chamber housing 12, the exhaust hole 122 is provided on the second end surface of the heat exchange chamber housing 12 and is communicated with the opening of the condensing chamber housing 13, and the exhaust pipe 31 is connected to the condensing chamber housing 13.

It can be understood that the constant heating device of the gas replacement steel cylinder in the embodiment of the utility model is designed into a box structure and is arranged in a simplified manner, the steam inlet chamber shell 11 and the heat exchange chamber shell 12 share a box wall, and the condensing chamber shell 13 and the heat exchange chamber shell 12 also share a box wall.

Alternatively, as shown in fig. 1, the steam inlet chamber housing 11 is located on the right side of the heat exchange chamber housing 12, the left end of the steam inlet chamber housing 11 has an opening, and the left end of the steam inlet chamber housing 11 is connected to the right end surface of the heat exchange chamber housing 12. The steam pipe 21 is connected with the right end face of the steam inlet chamber shell 11, and a hole is formed in the connecting position so that the pipe cavity of the steam pipe 21 is communicated with the steam inlet chamber.

The condensing chamber housing 13 is located at the rear side of the heat exchange chamber housing 12, the front end of the condensing chamber housing 13 has an opening, and the front end of the condensing chamber housing 13 is connected to the rear end surface of the heat exchange chamber housing 12. The exhaust pipe 31 is connected with the rear end face of the condensing chamber housing 13, and a hole is formed at the connection part so that the pipe cavity of the exhaust pipe 31 is communicated with the condensing chamber.

And a plurality of thin-wall small pipes are arranged in the condensing chamber shell 13, a cooling water inlet and a cooling water outlet are arranged on the right end face of the condensing chamber shell 13, and the cooling water inlet and the cooling water outlet can be respectively connected with a factory cooling water system through pipelines. Cooling water flows in from the cooling water inlet, flows out from the cooling water outlet through a plurality of thin-wall small pipes, and cools the steam entering the condensing chamber during the cooling process so as to condense the steam into liquid water. The left end face of the condensing chamber housing 13 is provided with a condensed water discharge port through which liquid water condensed from the steam is discharged.

In some embodiments, as shown in FIG. 1, the heat exchange chamber housing 12 includes a bottom plate, a first side plate, a second side plate, a third side plate, a fourth side plate, and a top cover, which are connected to form a generally rectangular parallelepiped heat exchange chamber housing 12. The steam inlet 121 is formed on the first side plate, and the steam outlet 122 is formed on the second side plate.

Alternatively, as shown in fig. 1, the first side plate is a right side plate of the heat exchange chamber housing 12, the second side plate is a rear side plate of the heat exchange chamber housing 12, the third side plate is a left side plate of the heat exchange chamber housing 12, and the third side plate is a front side plate of the heat exchange chamber housing 12.

In some embodiments, as shown in fig. 1, the plurality of steam inlets 121 are located at a portion of the first side plate remote from the second side plate, and the plurality of steam inlets 121 are spaced apart along a height direction of the first side plate and/or a length direction of the first side plate. The plurality of steam discharge holes 122 are spaced apart in a height direction of the second side plate and/or a width direction of the second side plate.

Specifically, as shown in fig. 1, a plurality of steam inlet holes 121 are located at the front half of the first side plate, the plurality of steam inlet holes 121 are respectively spaced in the up-down direction and the front-rear direction, and a plurality of steam outlet holes 122 are respectively spaced in the up-down direction and the left-right direction.

In some embodiments, as shown in fig. 1, the plurality of gas cylinders 14 are distributed at intervals along the length direction of the bottom plate, and the top cover is provided with a plurality of through holes 123, where the plurality of through holes 123 are in one-to-one correspondence with the plurality of gas cylinders 14, and the gas cylinders 14 penetrate through the through holes 123. It will be appreciated that the gas cylinder 14 is prevented from rocking in the horizontal direction by the restriction of the through hole 123.

Further, as shown in fig. 1, the right end of the top cover is connected to the upper end of the first side plate, and the top cover is reversible between a first position and a second position. In the first position, the gas cylinder 14 extends through the through hole 123, and in the second position, the gas cylinder 14 is located outside the through hole 123.

For example, the upper end of the first side plate is provided with a rotating shaft along the front-rear direction, the rotating shaft is rotatable along the central axis of the rotating shaft, and the right end of the top cover is connected with the rotating shaft, so that the top cover can be arranged on the first side plate in a turnover manner.

That is, the top cover is turned up, and after the top cover is closed, the gas cylinder 14 passes through the through hole 123, so that the head of the gas cylinder 14 is exposed out of the top cover to connect with the gas replacement system.

In some embodiments, as shown in fig. 1, the upper end surface of the bottom plate is provided with a plurality of U-shaped fixing members 124, the plurality of U-shaped fixing members 124 are in one-to-one correspondence with the plurality of gas cylinders 14, and the lower ends of the gas cylinders 14 are clamped in the U-shaped fixing members 124.

Alternatively, as shown in FIG. 1, the U-shaped fastener 124 may be left-facing in opening. By providing the U-shaped fixing member 124, the gas cylinder 14 is further fixed, and the stability of the installation of the gas cylinder 14 is improved.

In some embodiments, as shown in fig. 1, the third side panel includes a first door leaf and a second door leaf, the first door leaf being reversibly connected to the second side panel, the second door leaf being reversibly connected to the fourth side panel.

Alternatively, as shown in fig. 1, the rear end of the first door leaf is connected with the left end of the second side plate in a reversible manner, and the front end of the first door leaf is connected with the left end of the fourth side plate in a reversible manner. For example, the first door leaf and the second door leaf are both connected to the second side plate and the fourth side plate by hinge shafts. That is, the third side panel is a side-by-side door to facilitate installation and servicing of the gas cylinder 14.

In some embodiments, the device further comprises a controller (not shown in the figure), and the pressure control valve 211, the temperature control valve 212 and the fan 311 are all electrically connected with the controller.

It can be understood that the automatic start-stop functions of the pressure control valve 211, the temperature control valve 212 and the fan 311 are realized through a controller (programming a PLC controller), so as to realize the temperature control of the constant heating device of the gas replacement steel cylinder in the embodiment of the utility model.

The temperature control logic of the constant temperature device of the gas replacement steel cylinder according to the embodiment of the utility model is specifically described below.

When the temperature T measured by the temperature probe of the temperature control valve 212 is higher than the temperature set value T ₀ At this time, the opening degree of thermo valve 212 is reduced. When the temperature T measured by the temperature probe of the temperature control valve 212 is lower than the temperature set value T ₀ In this case, the opening of the temperature control valve 212 is increased to maintain the temperature in the heat exchange chamber at the temperature set value T ₀ Between them. When the temperature T measured by the temperature probe of the temperature control valve 212 reaches T ₁ When temperature control valve 212 is closed.

When the pressure probe of the pressure control valve 211 detects that the pressure of the gas inlet pipeline of the gas replacement system reaches or falls below the minimum allowable pressure P of the gas cylinder 14, or the temperature detected by the temperature detecting probe of the temperature control valve 212 reaches T ₁ And after 10 seconds the temperature has not yet fallen, the pressure control valve 211 is closed.

When the temperature control valve 212 and the pressure control valve 211 are closed at the same time, the fan 311 is shut down after a delay of 20 s.

Wherein the temperature is set to T ₀ The parameter range of (C) is 35-40 ℃, T ₁ At 40℃the minimum allowable pressure P of the gas cylinder 14 is 0.1MPa.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A gas substitution cylinder constant heat device, comprising:

the steel cylinder heating box body is provided with a steam inlet chamber, a heat exchange chamber, a condensing chamber, a plurality of steam inlet holes for communicating the steam inlet chamber with the heat exchange chamber, a plurality of steam exhaust holes for communicating the heat exchange chamber with the condensing chamber, and at least part of the gas steel cylinders are arranged in the heat exchange chamber;

the steam supply control assembly comprises a steam pipe, a pressure control valve and a temperature control valve, wherein the pipe cavity of the steam pipe is communicated with the steam inlet chamber, the pressure control valve and the temperature control valve are sequentially arranged on the steam pipe along the upstream-to-downstream direction, a pressure probe of the pressure control valve is arranged on an air inlet pipe of the gas replacement system, and a temperature probe of the temperature control valve is arranged in the heat exchange chamber;

the exhaust control assembly comprises an exhaust pipe and a fan, the pipe cavity of the exhaust pipe is communicated with the condensing chamber, and the fan is arranged on the exhaust pipe.

2. The constant temperature device for gas displacement cylinders according to claim 1, wherein the cylinder heating box body comprises a steam inlet chamber housing, a heat exchange chamber housing and a condensing chamber housing;

the first end of the steam inlet chamber shell is provided with an opening, the first end of the steam inlet chamber shell is connected with the first end face of the heat exchange chamber shell, the steam inlet hole is formed in the first end face of the heat exchange chamber shell and is communicated with the opening of the steam inlet chamber shell, and the steam pipe is connected with the steam inlet chamber shell;

the first end of the condensing chamber shell is provided with an opening, the first end of the condensing chamber shell is connected with the second end face of the heat exchange chamber shell, the steam exhaust hole is formed in the second end face of the heat exchange chamber shell and is communicated with the opening of the condensing chamber shell, and the steam exhaust pipe is connected with the condensing chamber shell.

3. The constant heat device for gas displacement cylinders of claim 2, wherein the heat exchange chamber housing comprises a bottom plate, a first side plate, a second side plate, a third side plate, a fourth side plate, and a top cover, wherein the bottom plate, the first side plate, the second side plate, the third side plate, the fourth side plate, and the top cover are connected to form the heat exchange chamber housing having a substantially rectangular parallelepiped shape, wherein the steam inlet is provided on the first side plate, and wherein the steam outlet is provided on the second side plate.

4. The constant temperature device for gas displacement cylinders according to claim 3, wherein the plurality of gas inlet holes are located at a portion of the first side plate away from the second side plate, and the plurality of gas inlet holes are spaced apart in a height direction of the first side plate and/or a length direction of the first side plate.

5. The constant temperature device for gas exchange steel cylinders according to claim 3, wherein the plurality of gas discharge holes are spaced apart in a height direction of the second side plate and/or a width direction of the second side plate.

6. The constant temperature device for gas exchange steel cylinders according to claim 3, wherein a plurality of the gas cylinders are distributed at intervals along the length direction of the bottom plate, a plurality of through holes are formed in the top cover, the plurality of through holes correspond to the plurality of the gas cylinders one by one, and the gas cylinders penetrate through the through holes.

7. The constant temperature device of claim 6, wherein the top cover is coupled to the first side plate, the top cover being reversible between a first position wherein the gas cylinder extends through the through hole and a second position wherein the gas cylinder is positioned outside the through hole.

8. The constant temperature device for the gas replacement steel cylinder according to claim 7, wherein a plurality of U-shaped fixing pieces are arranged on the upper end face of the bottom plate, the plurality of U-shaped fixing pieces are in one-to-one correspondence with the plurality of gas steel cylinders, and the lower ends of the gas steel cylinders are clamped in the U-shaped fixing pieces.

9. The constant temperature device for gas displacement cylinders according to claim 3, wherein the third side plate comprises a first door leaf and a second door leaf, the first door leaf is reversibly connected to the second side plate, and the second door leaf is reversibly connected to the fourth side plate.

10. The constant temperature device of claim 1, further comprising a controller, wherein the pressure control valve, the temperature control valve, and the blower are electrically connected to the controller.