CN219728540U

CN219728540U - Integrated oxygen consumption type inerting device

Info

Publication number: CN219728540U
Application number: CN202223549419.1U
Authority: CN
Inventors: 姜文; 王晨臣; 陈昂
Original assignee: AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Current assignee: AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-09-22
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses an integrated oxygen consumption type inerting device, which comprises a shell and an inerting system integrated in the shell, wherein: the system structure is divided into an upper layer and a lower layer according to the temperature of the flowing gas; the catalytic reactor and the heat exchanger are arranged on the upper layer of the system, and heat exchange gas channels of the catalytic reactor and the heat exchanger correspond to square grid areas on the front side plate and the rear side plate of the shell; other components of the system than the catalytic reactor and the heat exchanger are arranged in the lower layer, including a system inlet section, a system outlet section, an intermediate connection section and a bypass section. The system inlet section, the system outlet section and the middle connecting section are arranged in parallel, and form a three-transverse-one-longitudinal layout with the bypass section. The utility model has compact structure, small space size and small weight, and can better meet the installation condition.

Description

Integrated oxygen consumption type inerting device

Technical Field

The utility model belongs to the technical field of aviation, and particularly relates to an integrated oxygen consumption type inerting device.

Background

The fire explosion of an aircraft fuel system is one of the main reasons for the accident of various aircraft. There are data showing that during vietnam war, the united states air force loses thousands of fighters due to ground fire attacks, with up to 50% of the aircraft's deaths due to fire explosion of the aircraft fuel tanks; the worldwide record of transportation-type aircraft operation in recent 40 years shows that 16 accidents due to the explosion of the fuel tanks of the aircraft have occurred in recent 40 years, resulting in death of up to 530 people. Therefore, at present, effective measures are required to prevent the combustion explosion of the fuel tank whether the military machine or the civil machine is adopted.

In the early stage, inert gases such as nitrogen, carbon dioxide, haron 1301 and the like are mainly injected into the fuel tank by carrying an inert gas cylinder, so that the oxygen concentration in the fuel tank is lower than the maximum safe oxygen concentration limit value, and the safety of the fuel tank is ensured. However, this method increases the weight of the aircraft, has a short life and extremely poor maintainability, and makes it difficult to perform full-range inerting. In the late 70 s of the last century, an onboard nitrogen production inerting system for producing nitrogen-rich gas through a hollow fiber membrane becomes the most widely used aircraft fuel tank inerting system at present due to the advantages of economy, high efficiency and the like. However, in view of the current application state in recent years, the inerting system still has more problems, such as large aircraft compensation loss caused by air bleed from an engine, limited use occasions caused by high inlet demand pressure of the system, easy blockage of membrane wires, serious attenuation of membrane performance caused by sensitivity to ozone, environmental pollution caused by fuel vapor purged to the outside, and the like.

In recent years, methods for reducing the flammability of fuel tanks by consuming oxygen in the gas phase space above the fuel tank based on catalytic oxidation have been attracting attention. The novel inerting system has the advantages of no need of bleed air from an engine, light weight, no pollution and the like. However, the design of the catalytic oxygen consumption type inerting device is mainly remained in the system architecture design and the ground principle model trial-manufacturing stage with larger space size, and the catalytic oxygen consumption type inerting device meeting the installation requirement is not reported yet. Payload weight and space are important indicators of aircraft performance evaluation, so weight reduction and integration design are often required for on-board products that can be installed. However, due to the high operating temperature (typically 150-200 ℃) of the catalytic reactor, a hot path and a cold path exist in the system, an additional cooling system is needed, and high space arrangement and heat dissipation requirements are put forward on the integrated design of the oxygen consumption inerting device. The existing catalytic oxygen consumption type inerting device has large space size and weight, and can not meet the installation conditions.

Disclosure of Invention

The utility model aims to provide an integrated oxygen consumption type inerting device, which is used for solving the problems that the space size and the weight of the existing catalytic oxygen consumption type inerting device are large and the installed condition cannot be met.

In order to realize the tasks, the utility model adopts the following technical scheme:

an integrated oxygen-consuming inerting apparatus comprising a housing and an inerting system integrated within the housing, wherein:

the catalytic oxygen consumption type inerting system inside the shell comprises an inlet connecting pipe, an inlet flame suppressor, a first connecting pipe, an air inlet cut-off valve, a second connecting pipe, an air extraction fan, a third connecting pipe, a catalytic reactor, a fourth connecting pipe, an overtemperature cut-off valve, a fifth connecting pipe, a heat exchanger, a sixth connecting pipe, a water separator, a seventh connecting pipe, a temperature isolation valve, an eighth connecting pipe, an outlet flame suppressor, a ninth connecting pipe, an outlet connecting pipe, a bypass cut-off valve, an oxygen concentration-pressure sensor and a temperature-oxygen concentration-pressure sensor, wherein:

the system structure is divided into an upper layer and a lower layer according to the temperature of the flowing gas; the catalytic reactor and the heat exchanger are arranged on the upper layer of the system, and heat exchange gas channels of the catalytic reactor and the heat exchanger correspond to square grid areas on the front side plate and the rear side plate of the shell;

the other parts except the catalytic reactor and the heat exchanger in the system are arranged at the lower layer, and comprise a system inlet section, a system outlet section, an intermediate connecting section and a bypass section;

an inlet connecting pipe of the inlet section of the system, an inlet flame suppressor, a first connecting pipe, an air inlet cut-off valve, a second connecting pipe and an air exhaust fan are arranged in a straight line; the inlet connecting pipe is connected with the left side plate of the shell, and is provided with a threaded hole for connecting an oxygen concentration-pressure sensor; the two ends of the inlet flame suppressor are respectively connected with an inlet connecting pipe and a first connecting pipe, the other end of the first connecting pipe is connected with an air inlet cut-off valve, and the air inlet cut-off valve is connected with the lower part of the catalytic reactor; the second connecting pipe is a three-way connecting pipe, the inlet end of the second connecting pipe is connected with the air inlet cut-off valve, the outlet end of the second connecting pipe is connected with the air extraction fan, and the bypass end of the second connecting pipe is connected with the bypass cut-off valve; the outlet direction of the other end of the air exhaust fan is upward and is connected with a third connecting pipe, and the other end of the third connecting pipe is connected with the catalytic reactor;

the middle connecting section is mainly responsible for inflow and outflow of gas between the catalytic reactor and the heat exchanger and comprises a fourth connecting pipe, an overtemperature cut-off valve, a fifth connecting pipe and a sixth connecting pipe; the C-shaped fourth connecting pipe is connected with the catalytic reactor and one end of the overtemperature cut-off valve, so that the gas at the outlet of the catalytic reactor is conducted to the lower part of the system; the other end of the over-temperature cut-off valve bypasses the bypass cut-off valve through a fifth connecting pipe which is bent in a multi-section way and is connected with the heat exchanger; the heat exchanger conducts the outlet gas to the lower part of the system through a sixth connecting pipe which is bent in a multi-section way; a screw hole is reserved at the outlet end of the sixth connecting pipe and is used for installing a temperature-oxygen concentration-pressure sensor;

the water separator of the system outlet section, the seventh connecting pipe, the temperature isolation valve, the eighth connecting pipe, the outlet flame suppressor, the ninth connecting pipe, the outlet connecting pipe are arranged in a straight line and are parallel to the system inlet section; the inlet of the water separator is connected with a sixth connecting pipe, and the upper water leakage hole of the water separator is opposite to the position of the water outlet hole on the lower side plate of the shell; the seventh connecting pipe is a three-way connecting pipe, the inlet end of the seventh connecting pipe is connected with the water separator, the outlet end of the seventh connecting pipe is connected with the temperature isolation valve, and the bypass end of the seventh connecting pipe is connected with the bypass cut-off valve; one end of the eighth connecting pipe is connected with the temperature isolation valve, and the other end of the eighth connecting pipe is connected with the outlet flame suppressor; one end of the ninth connecting pipe is connected with the outlet flame suppressor, and the other end of the ninth connecting pipe is connected with the outlet connecting pipe and the left side plate of the shell;

the bypass section comprises a second connecting pipe, a seventh connecting pipe, two three-way pipes and a bypass cut-off valve; the second connecting pipe and the seventh connecting pipe are provided with the bypass shutoff valve.

Further, the shell is of a rectangular structure formed by six side plates, and comprises an upper shell side plate, a front shell side plate, a left shell side plate, a lower shell side plate, a rear shell side plate and a right shell side plate;

the upper side plate of the shell is carved with device model and brand information, and two prescription-shaped grid areas are symmetrically arranged on the front side plate and the rear side plate of the shell and are used for entering and discharging cold air; the left side plate of the shell is carved with a cold air direction, a system inlet and an outlet prompt, and two circular holes are reserved for the inflow and outflow of the catalytic oxygen consumption type inerting system gas; the lower side plate of the shell is provided with a water outlet hole for draining water.

Further, the system inlet section, the system outlet section and the intermediate connecting section are arranged in parallel, and form a three-transverse-one-longitudinal layout with the bypass section.

Further, the three parallel transverse layout pipelines are a system inlet section, a system outlet section and an intermediate connecting section, the total width of the three parallel transverse layout pipelines does not exceed the length of the catalytic reactor in the direction, and the transverse lengths of the three parallel transverse layout pipelines are the sum of the lengths of the catalytic reactor and the heat exchanger in the direction.

Further, the catalytic reactor is connected with the upper side plate of the shell and the rear side plate of the shell, and the heat exchanger is connected with the upper side plate of the shell.

Further, the system inlet and outlet are disposed on the same side of the left side panel of the housing.

Compared with the prior art, the utility model has the following technical characteristics:

1. the fuel vapor and oxygen mixture, which is flammable and explosive, in the fuel tank can be reacted to form the inert gas carbon dioxide.

2. The system is provided with the bypass branch, and through controlling the switch of the cut-off valve on the bypass branch, abnormal state gas can form internal circulation through the bypass branch without passing through the fuel tank, so that the safety of the system is greatly improved.

3. Products in the system are arranged in an up-down layered mode according to a high-temperature gas passing section and low-temperature gas passing section separation principle, heat dissipation of the system is facilitated, and working efficiency and safety are improved.

4. The system outlet and the system inlet are on the same side, so that the on-board installation and maintenance are convenient.

5. The structure is compact, the system occupies small space, and the integration degree is high.

Drawings

FIG. 1 is a first view of the housing of the present utility model;

FIG. 2 is a second view of the housing of the present utility model;

FIG. 3 is a first internal structural layout view of the present utility model;

FIG. 4 is a second internal layout view of the present utility model;

FIG. 5 is a third internal structural layout view of the present utility model;

fig. 6 is a fourth internal structural layout view of the present utility model.

The reference numerals in the figures illustrate: 1 a housing upper side plate, 2 a housing front side plate, 3 a housing left side plate, 4 a housing lower side plate, 5 a housing rear side plate, 6 a housing right side plate, 7 an inlet connection pipe, 8 an inlet flame arrestor, 9 a first connection pipe, 10 an inlet shut-off valve, 11 a second connection pipe, 12 an air extraction fan, 13 a third connection pipe, 14 a catalytic reactor, 15 a fourth connection pipe, 16 an overtemperature shut-off valve, 17 a fifth connection pipe, 18 a heat exchanger, 19 a sixth connection pipe, 20 a water separator, 21 a seventh connection pipe, 22 a temperature isolation valve, 23 an eighth connection pipe, 24 an outlet flame arrestor, 25 a ninth connection pipe, 26 an outlet connection pipe, 27 a bypass shut-off valve, 28 an oxygen concentration-pressure sensor, 29 a temperature-oxygen concentration-pressure sensor.

Detailed Description

According to the integrated oxygen consumption type inerting device, the heat dissipation requirement of the system is considered, products in the oxygen consumption type inerting system are reasonably arranged, and the integrated oxygen consumption type inerting device is provided, so that on one hand, the integrated level is high, and the integrated oxygen consumption type inerting device has the advantages of small product space size and excellent heat dissipation; on the other hand, the packaging machine and maintenance of the product are facilitated through reasonable packaging.

The utility model provides an integrated oxygen consumption type inerting device, as shown in fig. 1 and 2, which comprises a shell and an inerting system integrated in the shell, wherein:

the shell structure is a rectangular structure formed by six side plates (a shell upper side plate 1, a shell front side plate 2, a shell left side plate 3, a shell lower side plate 4, a shell rear side plate 5 and a shell right side plate 6) and are connected with each other through screws; the upper side plate 1 of the shell is carved with information such as device model, brand and the like, and the front side plate 2 of the shell and the rear side plate 5 of the shell symmetrically have two prescription-shaped grid areas for cold air to enter and discharge; the left side plate 3 of the shell is carved with a cold air direction, a system inlet and an outlet prompt, and two circular holes are reserved for the inflow and outflow of the catalytic oxygen consumption type inerting system gas; two water outlet holes are formed in the lower side plate 4 of the shell, and are used for draining water of the device.

The catalytic oxygen consumption inerting system inside the housing is composed of an inlet connection pipe 7, an inlet flame arrester 8, a first connection pipe 9, an air intake shutoff valve 10, a second connection pipe 11, an air extraction fan 12, a third connection pipe 13, a catalytic reactor 14, a fourth connection pipe 15, an overtemperature shutoff valve 16, a fifth connection pipe 17, a heat exchanger 18, a sixth connection pipe 19, a water separator 20, a seventh connection pipe 21, a temperature isolation valve 22, an eighth connection pipe 23, an outlet flame arrester 24, a ninth connection pipe 25, an outlet connection pipe 26, a bypass shutoff valve 27, an oxygen concentration-pressure sensor 28, a temperature-oxygen concentration-pressure sensor 29, wherein:

as shown in fig. 4, the internal system structure is divided into an upper layer and a lower layer according to the temperature of the flowing gas, so that the heat dissipation of the system is facilitated. The higher temperature gas in the system is mainly present in two larger volume components: a catalytic reactor 14 and a heat exchanger 18, both of which are arranged above the system; the catalytic reactor 14 has the functions of catalyzing oxygen consumption reaction, heat dissipation and temperature monitoring, and is respectively connected with the shell upper side plate 1 and the shell rear side plate 5 through screws. The heat exchanger 18 has heat dissipation and temperature monitoring functions and is responsible for further cooling the reacted gas and is connected with the upper side plate 1 of the shell through screws. The heat exchange gas channels of the catalytic reactor 14 and the heat exchanger 18 correspond to square grid areas of the front side plate 2 and the rear side plate 5 of the shell, and are beneficial to inflow and outflow of heat exchange gas.

Other parts in the system are arranged on the same layer below the catalytic reactor 14 and the heat exchanger 18, and are in three-transverse-one-longitudinal arrangement, wherein three transverse arrangement pipelines comprise a system inlet section, a system outlet section and a middle connecting section, and the longitudinal arrangement pipelines are bypass sections;

the total width of the three parallel transverse lines (i.e., the bypass length) should not exceed the length of the catalytic reactor 14 in that direction, and the transverse lengths of the three parallel transverse lines are approximately the sum of the lengths of the catalytic reactor 14 and the heat exchanger 18 in that direction. The system inlet and outlet are arranged on the same side of the left side plate 3 of the shell, so that the system is convenient to install and disassemble on the machine while the space is reasonably utilized.

As shown in fig. 3, the inlet connection pipe 7, the inlet flame suppressor 8, the first connection pipe 9, the air intake cut-off valve 10, the second connection pipe 11, and the air extraction fan 12 of the inlet section of the system are arranged in a straight line. The inlet connecting pipe 7 is connected with the left side plate 3 of the shell through a screw, and a threaded hole is formed in the inlet connecting pipe for connecting an oxygen concentration-pressure sensor 28 (used for measuring oxygen concentration and pressure). The two ends of the inlet flame suppressor 8 are respectively connected with the inlet connecting pipe 7 and the first connecting pipe 9 through threads, the other end of the first connecting pipe 9 is connected with the air inlet cut-off valve 10 through a flange, and the air inlet cut-off valve 10 is connected with the lower part of the catalytic reactor 14 through screws. The second connecting pipe 11 is a three-way connecting pipe, the inlet end is connected with the air inlet cut-off valve 10 through a flange, the outlet end is connected with the air extraction fan 12 through a cloth clamping pipe, and the bypass end is connected with the bypass cut-off valve 27 through a flange. The outlet direction of the other end of the air extraction fan 12 is upward, the air extraction fan is connected with a third connecting pipe 13 through a cloth clamping hose, and the other end of the third connecting pipe 13 is connected with a catalytic reactor 14 through welding.

The middle connecting section is mainly responsible for inflow and outflow of gas between the catalytic reactor 14 and the heat exchanger 18, and comprises the catalytic reactor 14, a fourth connecting pipe 15, an overtemperature cut-off valve 16, a fifth connecting pipe 17, the heat exchanger 18 and a sixth connecting pipe 19. As shown in fig. 3, the C-shaped fourth connecting pipe 15 is welded to the catalytic reactor 14 and connected to the overtemperature cut-off valve 16 by a flange, so that the outlet gas of the catalytic reactor 14 is conducted to the lower part of the system. As shown in fig. 6, the other end of the over-temperature cut-off valve 16 is connected to the heat exchanger 18 by welding by passing through a fifth connecting pipe 17 which is bent in a plurality of stages and bypassing the bypass cut-off valve 27. The heat exchanger 18 conducts the outlet gas to the underside of the system via a sixth connecting tube 19 which is bent in several sections. As shown in fig. 4, the sixth connection pipe 19 is provided with a screw hole at the outlet end for installing a temperature-oxygen concentration-pressure sensor 29 (for measuring oxygen concentration, pressure and temperature).

As shown in fig. 3, the water separator 20, the seventh connection pipe 21, the temperature isolation valve 22, the eighth connection pipe 23, the outlet flame arrestor 24, the ninth connection pipe 25, and the outlet connection pipe 26 of the system outlet section are arranged in a straight line and are parallel to the system inlet section. The inlet of the water separator 20 is connected with the sixth connecting pipe 19 through a cloth clamping adhesive tape, and the upper water leakage hole of the water separator is opposite to the position of the round hole on the lower side plate 4 of the shell. As shown in fig. 6, the seventh connecting pipe 21 is a three-way connecting pipe, the inlet end is connected to the water separator 20 through a cloth clamping pipe, the outlet end is connected to the temperature isolation valve 22 through a flange, and the bypass end is connected to the bypass shutoff valve 27 through a flange. One end of the eighth connecting pipe 23 is connected with the temperature isolation valve 22 through a flange, and the other end is connected with the outlet flame suppressor 24 through threads. One end of the ninth connecting pipe 25 is connected with the outlet flame arrestor 24 through threads, and the other end is connected with the outlet connecting pipe 26 and the left side plate 3 of the shell through a flange.

As shown in fig. 6, the bypass section mainly includes two three-way pipes of the second connection pipe 11 and the seventh connection pipe 21, and a bypass cut-off valve 27. The three are connected through a flange, and the installation angle is perpendicular to the inlet section and the outlet section.

The working principle of the utility model is as follows:

before the inerting device is operated, the inlet connection pipe 7 and the outlet connection pipe 26 are connected to the fuel tank outlet and inlet, respectively. During normal operation of the inerting apparatus, the intake shut-off valve 10, the suction fan 12, the over-temperature shut-off valve 16, the heat exchanger 18, the temperature isolation valve 22, and the bypass shut-off valve 27 are opened. The air extraction fan 12 sucks the mixed gas rich in fuel (hydrocarbon) vapor and oxygen in the fuel tank, and then the mixed gas sequentially passes through the inlet connecting pipe 7, the inlet flame suppressor 8, the first connecting pipe 9, the air intake cut-off valve 10, the second connecting pipe 11, the air extraction fan 12 and the third connecting pipe 13. The mixed gas then enters the catalytic reactor 14, and under the action of the catalyst, fuel oil (hydrocarbon) steam and oxygen in the gas react to generate water and carbon dioxide, and a large amount of heat is released, and the generated gas is primarily cooled by a heat dissipation channel of the catalytic reactor 14. The high temperature gas generated by the reaction will continue to pass through the fourth connecting pipe 15, the over-temperature cut-off valve 16 and the fifth connecting pipe 17 and enter the heat exchanger 18. The fans in the heat exchanger 18 will draw a large amount of cold side air through the heat sink channels to reduce the temperature of the hot air to room temperature. The low-temperature gas is then passed through the sixth connecting pipe 19 and the water separator 20, and the water vapor in the low-temperature gas is separated out of the water separator 20 after the water separator 20 acts on the low-temperature gas, and flows out of the casing through the holes in the lower side plate 4 of the casing. Finally, the dehydrated low-temperature gas is filled back into the oil tank after passing through a seventh connecting pipe 21, a temperature isolation valve 22, an eighth connecting pipe 23, an outlet flame suppressor 24, a ninth connecting pipe 25 and an outlet connecting pipe 26, so that the oil tank has the fireproof explosion suppression effect. When the oxygen concentration-pressure sensor 28 and the temperature-oxygen concentration-pressure sensor 29 sense that the oxygen concentration, pressure or temperature of the mixed gas in the system exceeds the standard, the inerting device enters a protection state. At this time, the system will open the bypass cut-off valve 27, keep the over-temperature cut-off valve 16, the air extraction fan 12 and the heat exchanger 18 working, and close the air intake cut-off valve 10 and the temperature isolation valve 22 until the oxygen concentration, pressure or temperature of the mixed gas returns to normal, and then re-enter the normal working state. By controlling the switch of the cut-off valve on the bypass branch, the abnormal state gas can form internal circulation through the bypass branch without passing through the fuel tank, thereby greatly improving the safety of the system.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting thereof; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced equally; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.

Claims

1. An integrated oxygen-consuming inerting apparatus comprising a housing and an inerting system integrated within the housing, wherein:

the inside catalytic oxygen consumption type inerting system of casing includes inlet connection pipe (7), inlet flame suppressor (8), first connecting pipe (9), air intake trip valve (10), second connecting pipe (11), air extraction fan (12), third connecting pipe (13), catalytic reactor (14), fourth connecting pipe (15), super temperature trip valve (16), fifth connecting pipe (17), heat exchanger (18), sixth connecting pipe (19), water separator (20), seventh connecting pipe (21), temperature isolation valve (22), eighth connecting pipe (23), export flame suppressor (24), ninth connecting pipe (25), export connecting pipe (26), bypass trip valve (27), oxygen concentration-pressure sensor (28), temperature-oxygen concentration-pressure sensor (29), wherein:

the system structure is divided into an upper layer and a lower layer according to the temperature of the flowing gas; the catalytic reactor (14) and the heat exchanger (18) are arranged on the upper layer of the system, and heat exchange gas channels of the catalytic reactor (14) and the heat exchanger (18) correspond to square grid areas on the front side plate (2) and the rear side plate (5) of the shell;

other components of the system except the catalytic reactor (14) and the heat exchanger (18) are arranged at the lower layer, and comprise a system inlet section, a system outlet section, an intermediate connecting section and a bypass section;

an inlet connecting pipe (7) of the inlet section of the system, an inlet flame suppressor (8), a first connecting pipe (9), an air inlet cut-off valve (10), a second connecting pipe (11) and an air extraction fan (12) are arranged in a straight line; wherein the inlet connecting pipe (7) is connected with the left side plate (3) of the shell, and is provided with a threaded hole for connecting an oxygen concentration-pressure sensor (28); the two ends of the inlet flame suppressor (8) are respectively connected with the inlet connecting pipe (7) and the first connecting pipe (9), the other end of the first connecting pipe (9) is connected with the air inlet cut-off valve (10), and the air inlet cut-off valve (10) is connected with the lower part of the catalytic reactor (14); the second connecting pipe (11) is a three-way connecting pipe, the inlet end is connected with the air inlet cut-off valve (10), the outlet end is connected with the air extraction fan (12), and the bypass end is connected with the bypass cut-off valve (27); the outlet direction of the other end of the air exhaust fan (12) is upward and is connected with a third connecting pipe (13), and the other end of the third connecting pipe (13) is connected with a catalytic reactor (14);

the middle connecting section is mainly responsible for inflow and outflow of gas between the catalytic reactor (14) and the heat exchanger (18), and comprises a fourth connecting pipe (15), an over-temperature cut-off valve (16), a fifth connecting pipe (17) and a sixth connecting pipe (19); the C-shaped fourth connecting pipe (15) is connected with the catalytic reactor (14) and one end of the overtemperature cut-off valve (16) to conduct the outlet gas of the catalytic reactor (14) to the lower part of the system; the other end of the over-temperature cut-off valve (16) bypasses the bypass cut-off valve (27) through a fifth connecting pipe (17) which is bent in a multi-section way and is connected with the heat exchanger (18); the heat exchanger (18) conducts the outlet gas to the lower part of the system through a sixth connecting pipe (19) which is bent in a multi-section way; a screw hole is reserved at the outlet end of the sixth connecting pipe (19) for installing a temperature-oxygen concentration-pressure sensor (29);

a water separator (20), a seventh connecting pipe (21), a temperature isolation valve (22), an eighth connecting pipe (23), an outlet flame suppressor (24), a ninth connecting pipe (25) and an outlet connecting pipe (26) of the system outlet section are arranged in a straight line and are parallel to the system inlet section; the inlet of the water separator (20) is connected with a sixth connecting pipe (19), and the upper water leakage hole of the water separator is opposite to the position of the water outlet hole on the lower side plate (4) of the shell; the seventh connecting pipe (21) is a three-way connecting pipe, the inlet end is connected with the water separator (20), the outlet end is connected with the temperature isolation valve (22), and the bypass end is connected with the bypass cut-off valve (27); one end of an eighth connecting pipe (23) is connected with the temperature isolation valve (22), and the other end is connected with the outlet flame suppressor (24); one end of a ninth connecting pipe (25) is connected with the outlet flame suppressor (24), and the other end of the ninth connecting pipe is connected with the outlet connecting pipe (26) and the left side plate (3) of the shell;

the bypass section comprises two three-way pipes of a second connecting pipe (11) and a seventh connecting pipe (21), and a bypass cut-off valve (27), wherein the bypass cut-off valve (27) is arranged between the second connecting pipe (11) and the seventh connecting pipe (21).

2. The integrated oxygen consumption type inerting device according to claim 1, wherein the shell is of a rectangular structure formed by six side plates, and comprises an upper shell side plate (1), a front shell side plate (2), a left shell side plate (3), a lower shell side plate (4), a rear shell side plate (5) and a right shell side plate (6);

the upper side plate (1) of the shell is carved with device model and brand information, and the front side plate (2) of the shell and the rear side plate (5) of the shell are symmetrically provided with two prescription-shaped grid areas for cold air to enter and discharge; the left side plate (3) of the shell is carved with a cold air direction, a system inlet and an outlet prompt, and two circular holes are reserved for the inflow and outflow of the catalytic oxygen consumption type inerting system gas; the lower side plate (4) of the shell is provided with a water outlet hole for draining water.

3. The integrated oxygen-consuming inerting apparatus of claim 1, wherein the system inlet section, the system outlet section, and the intermediate connecting section are arranged in parallel and in a three-horizontal-one-vertical arrangement with the bypass section.

4. An integrated oxygen-consuming inerting apparatus according to claim 3, characterized in that the three parallel transverse distribution lines are a system inlet section, a system outlet section, an intermediate connection section, the total width of which does not exceed the length of the catalytic reactor (14) in this direction, the transverse length of the three parallel transverse distribution lines being the sum of the lengths of the catalytic reactor (14) and the heat exchanger (18) in this direction.

5. The integrated oxygen-consuming inerting apparatus according to claim 1, characterized in that the catalytic reactor (14) is connected to the housing upper side plate (1) and the housing rear side plate (5), and the heat exchanger (18) is connected to the housing upper side plate (1).

6. The integrated oxygen-consuming inerting apparatus of claim 1, wherein the inlet and outlet of the system are located on the same side of the left side panel (3) of the housing.