CN114321695A

CN114321695A - Bimetallic strip steam trap that constant temperature constant current was prevented leaking

Info

Publication number: CN114321695A
Application number: CN202210230375.1A
Authority: CN
Inventors: 张正凯; 陈震翔; 尹洋
Original assignee: Ackam Jiangsu Industrial Technology Co ltd
Current assignee: Ackam Jiangsu Industrial Technology Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-04-12
Anticipated expiration: 2042-03-10
Also published as: CN114321695B

Abstract

The invention relates to the technical field of a drain valve, in particular to a constant-temperature constant-current leakage-proof bimetallic strip steam drain valve which comprises a shell, a temperature adjusting component, a flow inlet pipe, an exhaust component and a liquid discharge component, wherein the flow inlet pipe, the exhaust component and the liquid discharge component are arranged on the side surface, the top and the bottom of the shell, the flow inlet pipe comprises a pipe body, a partition plate, a heat exchange section, a straight pipe and a lower pipe, the pipe body is divided into a hot flow passage and a cold flow passage by the partition plate, the tail end of the pipe body is divided into two parts which are respectively connected with the straight pipe and the lower pipe, a hot flow passage is connected with the straight pipe, the cold flow passage is connected with the lower pipe, the straight pipe is bent upwards to the exhaust component, the lower pipe is bent downwards to the inner bottom surface of the shell, the temperature adjusting component senses the temperature in the exhaust component and adjusts the ratio of the overflowing areas of the hot flow passage and the cold flow passage at the heat exchange section, senses the steam temperature at the exhaust outlet of the steam drain valve through a metal sheet, and transfers one heat of an inlet working medium to the other two flows, the steam trap aims to solve the problems that the temperature of the discharged steam cannot be stabilized and the steam cannot be continuously output by the existing steam trap.

Description

Bimetallic strip steam trap that constant temperature constant current was prevented leaking

Technical Field

The invention relates to the technical field of drain valves, in particular to a constant-temperature, constant-flow and leakage-proof bimetallic strip steam drain valve.

Background

The steam trap is a common part in systems requiring steam working media in industry, and the steam trap has the function of discharging condensed water and guiding steam to a required station at the rear.

In the prior art, a steam trap generally only realizes the basic effect of water-vapor separation and shunt discharge, and has a certain requirement on the steam temperature at a use position, and the general steam trap cannot adjust the temperature, and needs to be configured with an independent heating component or a temperature adjusting component to adjust the steam discharged backwards by the steam trap to a proper temperature, so that the device cost and the control cost can be increased, and the linkage with the steam trap cannot be realized.

Therefore, there is a need in the industry for a steam trap that can spontaneously adjust the temperature of the discharged steam, so that the temperature of the discharged steam is stable and the steam is continuously output.

Disclosure of Invention

The invention aims to provide a constant-temperature constant-flow leakage-proof bimetallic strip steam trap to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme:

a constant-temperature constant-current leakproof bimetallic strip steam trap comprises a shell, a flow inlet pipe, an exhaust assembly, a liquid discharge assembly and a temperature regulating assembly, wherein the flow inlet pipe is inserted into the shell from the side wall of the shell and extends into the shell, the exhaust assembly is arranged on the upper wall surface of the shell, the liquid discharge assembly is arranged at the bottom of the shell, the temperature regulating assembly is connected with the exhaust assembly and the flow inlet pipe,

the inlet pipe comprises a pipe body, a partition plate, a heat exchange section, a straight-line pipe and a lower discharge pipe, the pipe body is divided into two runners by the partition plate, the two runners are respectively a hot runner and a cold runner, the tail end of the pipe body is divided into two parts which are respectively connected with the straight-line pipe and the lower discharge pipe, the hot runner is connected with the straight-line pipe, the cold runner is connected with the lower discharge pipe, the straight-line pipe is bent upwards to face the exhaust assembly, the lower discharge pipe is bent downwards to face the inner bottom surface of the shell,

the heat exchange section is arranged at the middle section of the pipe body, the temperature adjusting assembly senses the temperature in the exhaust assembly and adjusts the flow area ratio of the hot runner and the cold runner at the heat exchange section, and when the temperature of steam in the exhaust assembly is increased, the area ratio of the hot runner and the cold runner is increased.

The steam is connected into the inlet pipe and is divided into two flows by the partition plate to flow subsequently, the temperature of the steam to be discharged at the exhaust assembly is sensed by the temperature adjusting assembly, in order to stabilize the output temperature of the steam, the temperature of the steam conveyed by the hot runner to the straight-line pipe needs to be adjusted, the temperature of the steam in the hot runner is carried out through heat exchange, when the temperature at the exhaust assembly is insufficient, the flow area of the cold runner at the heat exchange section is increased, the flow area of the hot runner is reduced, the pressure in the cold runner is increased, the temperature in the hot runner is reduced, more heat at the heat exchange section is transferred from the steam in the cold runner to the steam in the hot runner, after the two flows pass through the heat exchange section, the two flows return to the pressure state at the initial flow dividing, the steam in the hot runner has higher temperature than the steam at the inlet pipe, the temperature in the cold runner is reduced, and the steam with higher temperature in the hot runner is guided to be discharged to the exhaust assembly, the low-temperature steam in the cold runner is discharged from the lower discharge pipe towards the bottom of the shell, and if the low-temperature steam is condensed in the backward flowing process, the low-temperature steam becomes condensed water and is accumulated at the bottom of the shell to wait for the liquid water to be discharged by the liquid discharge assembly, and the core is as follows: the whole heat of the steam is concentrated on a part of the steam to be discharged, so that the outlet temperature meets the requirement.

Furthermore, the heat exchange section comprises a plurality of flow distribution plates which are arranged in parallel, the flow distribution plates divide a flow passage of the heat exchange section into a plurality of parallel subdivided flow passages, the temperature adjusting assembly is used for adjusting the number of the subdivided flow passages which are respectively connected to the hot flow passage and the cold flow passage to change the ratio of the flow areas of the hot flow passage and the cold flow passage, and the ratio of the flow areas of the hot flow passage and the cold flow passage is maximally one.

The flow distribution plate is provided with five flow distribution plates, six subdivided flow passages are constructed, two flow passages are connected to the hot runner, and the remaining four flow passages are connected to the cold runner, so that the flow area ratio is zero five, and the shielding position of the temperature adjusting assembly at the heat exchange section is adjusted, so that the area ratio of the hot runner and the cold runner can be adjusted.

Furthermore, the heat exchange section also comprises a heat exchange rod, the heat exchange rod is arranged in the heat exchange section, the heat exchange rod is inserted into all the flow distribution plates, the surface of the heat exchange rod is provided with a plurality of burrs, and the heat exchange rod is made of copper or aluminum.

The heat exchange rod is arranged in the hot and cold runner and assists the steam subjected to temperature change in the hot and cold runner to carry out heat transfer.

Further, the subassembly that adjusts the temperature includes the wobble plate subassembly, the sheetmetal, collude the connecting rod, the sheetmetal sets up in exhaust subassembly, the vertical side of sheetmetal is put in exhaust subassembly, the sheetmetal lower extreme is fixed, the upper end floats, the unsteady one end connection of sheetmetal colludes the connecting rod, collude the connecting rod and set up to a vertical guide structure on, collude the one end that the sheetmetal was kept away from to the connecting rod and connect two wobble plate subassemblies, the wobble plate subassembly sets up the both ends of heat transfer section, the wobble plate subassembly receives collude the connecting rod tractive and change and insert the hot runner, the subdivision runner quantity of cold runner, the sheetmetal is the arc deformation piece that double-deck metal constitutes, when the sheetmetal temperature risees, the sheetmetal descends at last floating end.

The sheet metal feels the temperature of discharging steam in exhaust assembly, and when the temperature is lower, its deformation is little, and the lower extreme of sheet metal is in the low level, colludes connecting rod, balance bar subassembly and also all is in the low level, and at this moment, hot runner and cold runner flow area ratio reach the biggest, and the heat is minimum from cold runner to hot runner transmission.

Further, the swing plate assembly comprises a swing plate, arc-shaped blocking pieces, a traction rod, an arch-shaped rod and a traction ring, the swing plate is arranged at one end of the swing plate and hinged to the end portion of the partition plate, the swing plate swings up and down around a horizontal hinged shaft, the arc-shaped blocking pieces are arranged at one end, close to the flow distribution plate, of the swing plate, the arch-shaped rod is arranged on the upper surface of the swing plate, the traction rod is vertically arranged, the lower end of the traction ring is provided with the traction ring, the traction ring is sleeved on the arch-shaped rod, and the upper end of the traction ring is connected with the hook connecting rod.

When the hook connecting rod is driven by the metal sheet to lift, the traction rod also vertically moves, the traction ring hooks the arch-shaped rod and slides on the arch-shaped rod, and when the traction rod lifts, the swinging plate swings to change the height position of the tail end of the swinging plate relative to the flow distribution plate, and the number of the subdivided flow channels connected to the hot and cold flow channels is adjusted.

Furthermore, the exhaust assembly comprises an exhaust pipe, a floating ball, a suction inlet and a screen plate, the exhaust pipe is fixed at the top of the shell, an interface is arranged at the upper end of the exhaust pipe, a conical suction inlet is arranged at the bottom end of the exhaust pipe, a choke is arranged in the middle of the exhaust pipe, the screen plate is arranged in front of the choke, the screen plate supports the floating ball, the ball diameter of the floating ball is larger than the caliber of the choke, the upper end of the straight exhaust pipe is directly opposite to the suction inlet, a metal sheet is arranged on the inner wall of the exhaust pipe, and the metal sheet is positioned above the choke.

Hot steam coming from a hot runner is blown into a suction inlet from a straight exhaust pipe, during overcurrent, uncondensed gas in the shell can be sucked and enters the exhaust pipe from the suction inlet, all gas in a drain valve is discharged from the exhaust pipe, if the temperature of the discharged gas is insufficient, the heat exchange quantity is increased at the heat exchange section to obtain higher-temperature steam flowing out from the straight exhaust pipe, after the lower-temperature gas in the shell is mixed, if the temperature is not enough, the heat exchange quantity is further increased by the heat exchange section, the process of pressure reduction and temperature reduction is carried out when the heat exchange of the gas in a cold flow passage is finished and the gas is guided into a lower exhaust pipe, part of the steam is condensed into water in the process and cannot be used as gas to fill the space in the shell, therefore, the steam with enough temperature in the drain valve is equivalent to be discharged by the exhaust pipe, if the temperature is insufficient, the heat is taken out by liquefying part of the steam into water, and the discharged steam has enough heat to be led out, the liquid water is only discharged from the liquid discharge component, and the floating ball prevents the water body from being discharged from the exhaust pipe when a large amount of water enters the drain valve.

Further, flowing back subassembly includes U type pipe, float, spacing screen panel, and U type pipe one end is connected in the shell bottom, one end as the trap outlet, and spacing screen panel sets up in the shell bottom, and spacing screen panel is located U type pipe import department, and the float is placed in spacing screen panel.

When liquid is accumulated in the shell, the floater floats upwards, the inner space of the shell is communicated with the liquid discharging position through the U-shaped pipe, the liquid discharging process is carried out, after the liquid discharging is finished, the floater falls back to block an inlet of the U-shaped pipe, gas is prevented from being discharged from the U-shaped pipe, the height of the discharging end of the U-shaped pipe is designed along with the steam pressure of the drain valve, when the steam pressure is atmospheric pressure or slightly greater than atmospheric pressure, the heights of the two ends of the U-shaped pipe are equal, when the steam pressure conveyed by the drain valve is higher, the height of the liquid discharging end of the U-shaped pipe is increased, liquid is always stored in the U-shaped pipe, the liquid also provides buoyancy for the floater, and when the liquid is accumulated in the shell, the floater can float and is not pressed at the end part of the U-shaped pipe by the high pressure in the shell to block the liquid discharging channel all the time.

Furthermore, the lower end of the lower discharge pipe is inserted into the bottom in the shell, and a gap is reserved between the tail end of the lower discharge pipe and the bottom surface in the shell and is smaller than one fourth of the diameter of the float ball.

The lower vent tube discharges low temperature steam and condensate sufficiently inserted into the bottom of the housing to facilitate condensation of steam near the condensation point into water that remains in the sump at the bottom of the housing.

Compared with the prior art, the invention has the following beneficial effects: the steam temperature at the exhaust port of the steam trap is sensed by the metal sheet, the overflowing state of two flows which are shunted in advance in the inflow pipe is changed when the temperature is lower, the integral heat of one flow is transferred to the other flow, two flows of steam with the higher temperature and the lower temperature are output at the tail end of the inflow pipe, the low-temperature steam contains a small amount of condensed water generated in the heat transfer process, the steam in a gas state can be kept and sucked away at the suction port of the exhaust component, the steam is mixed into output steam with the temperature meeting the requirement, the steam is continuously output at the more stable temperature, constant-temperature and continuous steam flow is provided for the use position of the steam at the rear part, the condensed water is discharged by the drainage component of the trap, and the temperature stability of the heat transfer and the output steam flow can be realized in the trap.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the heat exchange section in the inlet pipe according to the present invention;

FIG. 3 is view A-A of FIG. 2;

FIG. 4 is view B of FIG. 2;

FIG. 5 is a schematic view of the construction of the vent assembly of the present invention;

FIG. 6 is a schematic view of the construction of the drainage assembly of the present invention;

in the figure: the heat exchanger comprises a shell 1, a flow inlet pipe 2, a hot runner 201, a cold runner 202, a pipe body 21, a partition plate 22, a heat exchange section 23, a flow dividing plate 231, a heat exchange rod 232, a straight exhaust pipe 24, a downward exhaust pipe 25, an exhaust assembly 3, an exhaust pipe 31, a floating ball 32, a suction inlet 33, a screen plate 34, a liquid discharge assembly 4, a U-shaped pipe 41, a floater 42, a limiting mesh enclosure 43, a temperature adjusting assembly 5, a swinging plate 51, a swinging plate 511, an arc baffle 512, a pull rod 513, an arch rod 514, a pull ring 515, a metal sheet 52 and a hook connecting rod 53.

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1 to 6, the present invention provides a technical solution:

a constant temperature constant flow leakproof bimetallic strip steam trap comprises a shell 1, a flow inlet pipe 2, an exhaust component 3, a drainage component 4 and a temperature regulating component 5, wherein the flow inlet pipe 2 is inserted from the side wall of the shell 1 and extends into the shell 1, the exhaust component 3 is arranged on the upper wall surface of the shell 1, the drainage component 4 is arranged at the bottom of the shell 1, the temperature regulating component 5 is connected with the exhaust component 3 and the flow inlet pipe 2,

the inlet pipe 2 comprises a pipe body 21, a partition plate 22, a heat exchange section 23, a straight exhaust pipe 24 and a lower exhaust pipe 25, the pipe body 21 is divided into two flow passages by the partition plate 22, the two flow passages are respectively a hot runner 201 and a cold runner 202, the tail end of the pipe body 21 is divided into two parts which are respectively connected with the straight exhaust pipe 24 and the lower exhaust pipe 25, the hot runner 201 is connected with the straight exhaust pipe 24, the cold runner 202 is connected with the lower exhaust pipe 25, the straight exhaust pipe 24 is bent upwards to face the exhaust component 3, the lower exhaust pipe 25 is bent downwards to face the inner bottom surface of the shell 1,

the heat exchange section 23 is arranged at the middle section of the pipe body 21, the temperature adjusting assembly 5 senses the temperature in the exhaust assembly 3 and adjusts the ratio of the flow area of the hot runner 201 and the cold runner 202 at the heat exchange section 23, and when the temperature of steam in the exhaust assembly 3 rises, the ratio of the areas of the hot runner 201 and the cold runner 202 is increased.

As shown in fig. 1, the steam is introduced into the inlet pipe 2 and is divided into two flows by the partition plate 22 for subsequent flowing, the temperature of the steam to be discharged at the exhaust assembly 3 is sensed by the temperature adjustment assembly 5, in order to stabilize the output temperature of the steam, the temperature of the steam conveyed by the hot runner 201 to the straight exhaust pipe 24 needs to be adjusted, the temperature of the steam in the hot runner 201 is performed by heat exchange, when the temperature at the exhaust assembly 3 is insufficient, the flow area of the cold runner 202 at the heat exchange section 23 is increased, the flow area of the hot runner 201 is decreased, the pressure in the cold runner 202 is increased, the temperature of the pressure in the hot runner 201 is decreased, more heat at the heat exchange section 23 is transferred from the steam in the cold runner 202 to the steam in the hot runner 201, after the two flows of the steam pass through the heat exchange section 23, the pressure state at the initial flow division is restored, the temperature of the steam in the hot runner 201 is higher than the steam at the inlet of the inlet pipe 2, the cold runner 202 is cooled, and the steam with higher temperature in the hot runner 201 is guided to the exhaust assembly 3 to be exhausted, the low-temperature steam in the cold runner 202 is exhausted from the lower exhaust pipe 25 to the bottom of the housing 1, if the steam is condensed in the backward flowing process, the steam becomes condensed water and is accumulated at the bottom of the housing 1, and the liquid drainage assembly 4 waits for liquid water to be drained, and the core is that: the whole heat of the steam is concentrated on a part of the steam to be discharged, so that the outlet temperature meets the requirement.

The heat exchange section 23 comprises a plurality of flow distribution plates 231 arranged in parallel, the flow distribution plates 231 divide a flow passage of the heat exchange section 23 into a plurality of parallel subdivided flow passages, the temperature adjustment assembly 5 adjusts the number of the subdivided flow passages connected to the hot runner 201 and the cold runner 202 respectively to change the ratio of the flow passing areas of the hot runner 201 and the cold runner 202, as shown in fig. 2, two subdivided flow passages become the hot runner 201 flow passing, the area is S1, 3 subdivided flow passages become the cold runner 202 flow passing, the area is S2, and the ratio of the flow passing areas of the hot runner 201 and the cold runner 202 is maximum one.

As shown in fig. 2, five flow distribution plates 231 are provided, six subdivided flow channels are constructed, two flow channels are connected to the hot runner 201, and the remaining four flow channels are connected to the cold runner 202, so that the flow area ratio is zero five, and the area ratio of the hot and cold runners can be adjusted by adjusting the shielding position of the temperature adjustment assembly 5 at the heat exchange section 23.

The heat exchange section 23 further comprises a heat exchange rod 232, the heat exchange rod 232 is arranged in the heat exchange section 23, the heat exchange rod 232 penetrates through all the flow distribution plates 231, a plurality of burrs are arranged on the surface of the heat exchange rod 232, and the heat exchange rod 232 is made of copper or aluminum.

As shown in fig. 2 and 3, the heat exchange rod 232 is present in the hot and cold runner and assists the steam subjected to temperature change in the hot and cold runner to transfer heat.

The temperature adjusting component 5 comprises a swinging plate component 51, a metal sheet 52 and a hook connecting rod 53, the metal sheet 52 is arranged in the exhaust component 3, the metal sheet 52 is vertically placed in the exhaust component 3, the lower end of the metal sheet 52 is fixed, the upper end of the metal sheet 52 floats, one end of the metal sheet 52 floats is connected with the hook connecting rod 53, the hook connecting rod 53 is arranged on a vertical guide structure, one end of the hook connecting rod 53, which is far away from the metal sheet 52, is connected with two swinging plate components 51, the swinging plate components 51 are arranged at two ends of the heat exchange section 23, the swinging plate components 51 are pulled by the hook connecting rod 53 to change the number of subdivided runners connected into the hot runner 201 and the cold runner 202, the metal sheet 52 is an arc-shaped deformation sheet formed by double-layer metal, and when the temperature of the metal sheet 52 rises, the floating end of the metal sheet 52 on the upper portion descends.

As shown in fig. 2, 4 and 5, the metal sheet 52 senses the temperature of the exhaust steam in the exhaust assembly 3, and when the temperature is low, the deformation is small, the lower end of the metal sheet 52 is at a low position, and the hook rod 53 and the wobble plate assembly 51 are also at the low position, at this time, the ratio of the flow area of the hot runner 201 to the flow area of the cold runner 202 is maximized, and the heat transfer from the cold runner 202 to the hot runner 201 is minimized.

The swing plate assembly 51 comprises a swing plate 511, arc-shaped blocking pieces 512, a traction rod 513, an arch-shaped rod 514 and a traction ring 515, the swing plate 511 is arranged at one end and hinged at the end part of the partition plate 22, the swing plate 511 swings up and down around a horizontal hinged shaft, the arc-shaped blocking pieces 512 are arranged at one end of the swing plate 511 close to the diversion plate 231, the arch-shaped rod 514 is arranged on the upper surface of the swing plate 511, the traction rod 513 is vertically arranged, the traction ring 515 is arranged at the lower end of the traction rod 513, the traction ring 515 is sleeved on the arch-shaped rod 514, and the upper end of the traction rod 513 is connected with a hook connecting rod 53.

As shown in fig. 2 to 4, when the hook link 53 is driven by the metal sheet 52 to move up and down, the pull rod 513 also moves vertically, the pull ring 515 hooks the arch rod 514 and slides on the arch rod 514, and when the pull rod 513 moves up and down, the swing plate 511 swings to change the height position of the tail end of the swing plate relative to the diversion plate 231, so as to adjust the number of the subdivided channels connected to the hot and cold channels.

The exhaust component 3 comprises an exhaust pipe 31, a floating ball 32, an intake port 33 and a screen 34, wherein the exhaust pipe 31 is fixed at the top of the shell 1, an interface is arranged at the upper end of the exhaust pipe to the outside, the conical intake port 33 is arranged at the bottom end of the exhaust pipe 31, a choke is arranged in the middle of the exhaust pipe 31, the screen 34 is arranged in front of the choke, the screen 34 supports the floating ball 32, the ball diameter of the floating ball 32 is larger than that of the choke, the upper end of the straight exhaust pipe 24 is directly opposite to the intake port 33, a metal sheet 52 is arranged on the inner wall of the exhaust pipe 31, and the metal sheet 52 is positioned above the choke.

As shown in fig. 5, hot steam from the hot runner 201 is blown into the suction port 33 from the straight exhaust pipe 24, during an overcurrent, non-condensed gas in the housing 1 is sucked and also enters the exhaust pipe 31 from the suction port 33, all gas in the trap is exhausted from the exhaust pipe 31, if the temperature of the exhaust gas is insufficient, the heat exchange amount is increased at the heat exchange section 23 to obtain steam with higher temperature flowing out from the straight exhaust pipe 24, if the temperature is not enough to be exhausted after mixing lower temperature gas in the housing 1, the heat exchange section 23 further increases the heat exchange amount, when the heat exchange of the gas in the cold runner 202 is completed and the gas is introduced into the lower exhaust pipe 25, a part of the steam is condensed into water, and cannot fill the space in the housing 1 as a gas state, therefore, only enough steam with enough temperature in the trap is exhausted from the exhaust pipe 31, if the temperature is insufficient, the heat is extracted by liquefying part of the steam into water, so that the discharged steam has enough heat to be discharged, the liquid water is discharged from the drainage assembly 4, and the floating ball 32 prevents the water body from being discharged from the exhaust pipe 31 when the drain valve enters a large amount of liquid water.

The liquid discharge assembly 4 comprises a U-shaped pipe 41, a float 42 and a limiting mesh enclosure 43, one end of the U-shaped pipe 41 is connected to the bottom of the shell 1, one end of the U-shaped pipe is used as a drain outlet of the drain valve, the limiting mesh enclosure 43 is arranged at the bottom in the shell 1, the limiting mesh enclosure 43 is positioned at the inlet of the U-shaped pipe 41, and the float 42 is placed in the limiting mesh enclosure 43.

As shown in fig. 6, when liquid accumulates in the housing 1, the float 42 floats upwards, the internal space of the housing 1 is communicated with the liquid discharging position through the U-shaped pipe 41, the liquid discharging process is performed, after the liquid discharging is completed, the float 42 falls back to block the inlet of the U-shaped pipe 41, gas is prevented from being discharged from the inlet, the height of the discharging end of the U-shaped pipe 41 is designed according to the steam pressure of the steam trap, when the steam pressure is atmospheric pressure or slightly greater than atmospheric pressure, the heights of the two ends of the U-shaped pipe 41 are equal, when the steam pressure delivered by the steam trap is higher, the height of the liquid discharging end of the U-shaped pipe 41 should be increased, liquid is always accumulated in the U-shaped pipe 41, and the liquid also provides buoyancy for the float 42, so that when the liquid accumulates in the housing 1, the float 42 can block the liquid discharging channel all the time even if floating instead of being pressed at the end of the U-shaped pipe 41 by the high pressure in the housing 1.

The lower end of the lower discharging pipe 25 is inserted into the bottom of the shell 1, and a gap is left between the tail end of the lower discharging pipe 25 and the inner bottom surface of the shell 1, and the gap is smaller than one fourth of the sphere diameter of the floater 42.

As shown in fig. 6, the lower drain pipe 25 discharges low-temperature steam and condensed water, which is sufficiently inserted into the bottom of the case 1 to facilitate the steam near the condensation point to be condensed into water and remain in the accumulated liquid layer at the bottom inside the case 1.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a bimetallic strip steam trap that constant temperature constant current is prevented leaking which characterized in that: the trap comprises a shell (1), a flow inlet pipe (2), an exhaust component (3), a liquid discharge component (4) and a temperature regulating component (5), wherein the flow inlet pipe (2) is inserted into the shell (1) from the side wall of the shell (1) and extends into the shell (1), the exhaust component (3) is arranged on the upper wall surface of the shell (1), the liquid discharge component (4) is arranged at the bottom of the shell (1), and the temperature regulating component (5) is connected with the exhaust component (3) and the flow inlet pipe (2),

the inlet pipe (2) comprises a pipe body (21), a partition plate (22), a heat exchange section (23), a straight exhaust pipe (24) and a lower exhaust pipe (25), the pipe body (21) is internally divided into two runners by the partition plate (22), the two runners are respectively a hot runner (201) and a cold runner (202), the tail end of the pipe body (21) is divided into two parts which are respectively connected with the straight exhaust pipe (24) and the lower exhaust pipe (25), the hot runner (201) is connected with the straight exhaust pipe (24), the cold runner (202) is connected with the lower exhaust pipe (25), the straight exhaust pipe (24) is bent upwards to face the exhaust assembly (3), and the lower exhaust pipe (25) is bent downwards to face the inner bottom surface of the shell (1),

the heat exchange section (23) is arranged in the middle section of the pipe body (21), the temperature adjusting assembly (5) senses the temperature in the exhaust assembly (3) and adjusts the flow area ratio of the hot runner (201) and the cold runner (202) at the heat exchange section (23), and when the temperature of steam in the exhaust assembly (3) is increased, the area ratio of the hot runner (201) and the cold runner (202) is increased.

2. A thermostatic constant-flow leak-proof bimetallic strip steam trap as in claim 1, wherein: the heat exchange section (23) comprises a plurality of flow distribution plates (231) which are arranged in parallel, the flow distribution plates (231) divide a flow passage of the heat exchange section (23) into a plurality of parallel subdivided flow passages, the temperature adjusting assembly (5) adjusts the number of the subdivided flow passages which are respectively connected to the hot runner (201) and the cold runner (202) to change the ratio of the flow passing areas of the hot runner (201) and the cold runner (202), and the maximum ratio of the flow passing areas of the hot runner (201) and the cold runner (202) is one.

3. A thermostatic constant-flow leak-proof bimetallic strip steam trap as in claim 2, wherein: the heat exchange section (23) further comprises a heat exchange rod (232), the heat exchange rod (232) is arranged in the heat exchange section (23), the heat exchange rod (232) penetrates through all the flow distribution plates (231), a plurality of burrs are arranged on the surface of the heat exchange rod (232), and the heat exchange rod (232) is made of copper or aluminum.

4. A thermostatic constant-flow leak-proof bimetallic strip steam trap as in claim 2, wherein: the temperature adjusting assembly (5) comprises a swinging plate assembly (51), a metal sheet (52) and a hook connecting rod (53), the metal sheet (52) is arranged in the exhaust assembly (3), the vertical side of the metal sheet (52) is placed in the exhaust assembly (3), the lower end of the metal sheet (52) is fixed, the upper end of the metal sheet (52) floats, one end of the metal sheet (52) which floats is connected with the hook connecting rod (53), the hook connecting rod (53) is arranged on a vertical guide structure, one end of the hook connecting rod (53) which is far away from the metal sheet (52) is connected with two swinging plate assemblies (51), the swinging plate assemblies (51) are arranged at two ends of the heat exchange section (23), the swinging plate assemblies (51) are pulled by the hook connecting rod (53) to change the number of subdivided runners which are connected into the hot runner (201) and the cold runner (202), the metal sheet (52) is an arc-shaped deformation sheet formed by double-layer metal, and when the temperature of the metal sheet (52) rises, the metal sheet (52) descends at the upper floating end.

5. A thermostatic, constant-flow, leak-proof bimetallic strip steam trap as defined in claim 4, wherein: swing board subassembly (51) are including swing board (511), arc separation blade (512), traction rod (513), arch pole (514) and traction ring (515), swing board (511) set up and articulate at baffle (22) tip in one end, swing board (511) are around horizontal articulated shaft luffing motion, swing board (511) are close to the one end of flow distribution plate (231) and set up arc separation blade (512), and swing board (511) upper surface sets up arch pole (514), traction rod (513) vertical setting, traction rod (513) lower extreme set up traction ring (515), on traction ring (515) suit arch pole (514), traction rod (513) upper end hookup colludes connecting rod (53).

6. A thermostatic, constant-flow, leak-proof bimetallic strip steam trap as defined in claim 4, wherein: exhaust subassembly (3) are including blast pipe (31), floater (32), sunction inlet (33), otter board (34), blast pipe (31) are fixed at shell (1) top and are put the interface at the up end external, and blast pipe (31) bottom sets up toper sunction inlet (33), and blast pipe (31) intermediate position sets up the choke and sets up otter board (34) in choke the place ahead, otter board (34) bearing live floater (32), floater (32) ball footpath is greater than the choke bore, in-line pipe (24) upper end is directly to sunction inlet (33), sheetmetal (52) set up on blast pipe (31) inner wall, and sheetmetal (52) are located the top of choke.

7. A thermostatic, constant-flow, leak-proof bimetallic strip steam trap as defined in claim 4, wherein: the liquid drainage assembly (4) comprises a U-shaped pipe (41), a floater (42) and a limiting mesh enclosure (43), one end of the U-shaped pipe (41) is connected to the bottom of the shell (1), one end of the U-shaped pipe is used as a drain valve drain outlet, the limiting mesh enclosure (43) is arranged at the bottom in the shell (1), the limiting mesh enclosure (43) is located at the inlet of the U-shaped pipe (41), and the floater (42) is placed in the limiting mesh enclosure (43).

8. A thermostatic, constant-flow, leak-proof bimetallic steam trap as defined in claim 7, wherein: the lower end of the lower discharging pipe (25) is inserted into the bottom in the shell (1), a gap is reserved between the tail end of the lower discharging pipe (25) and the inner bottom surface of the shell (1), and the gap is smaller than one fourth of the sphere diameter of the floater (42).