CN212156654U - Gas taking and condensing device of coal mine gas pipeline monitoring sensor - Google Patents
Gas taking and condensing device of coal mine gas pipeline monitoring sensor Download PDFInfo
- Publication number
- CN212156654U CN212156654U CN202020292944.1U CN202020292944U CN212156654U CN 212156654 U CN212156654 U CN 212156654U CN 202020292944 U CN202020292944 U CN 202020292944U CN 212156654 U CN212156654 U CN 212156654U
- Authority
- CN
- China
- Prior art keywords
- gas
- pipeline
- taking
- pipe
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a colliery gas transmission pipeline monitoring sensor gets gas condensing equipment will get gas condensing equipment and install and get gas automatically on gas transmission pipeline, including the pipe connection seat subassembly that is used for connecting gas transmission pipeline, be used for automatic extraction gas in the gas transmission pipeline and can the drainage get gas drainage subassembly, be used for carrying out the condensation subassembly of condensation and be used for connecting the sensor's sensor installation component to the gas of extraction. The utility model discloses a colliery gas transmission pipeline monitoring sensor gets gas condensing equipment and gets the gas method, arranges (defeated) gas pipeline and malleation side pipeline promptly and goes up supporting sensor and use, and device integration structural design, the installation is maintained simply, and efficient structural design realizes the rapid cooling of gas appearance, and simple reliable self-draining design has saved personnel's maintenance cost.
Description
The technical field is as follows:
the utility model relates to an industrial and mining equipment technical field especially relates to a colliery gas transmission pipeline monitoring sensor condensation device that gets gas.
Background art:
a ground pump station of the coal mine gas extraction system is provided with a water ring type vacuum ring pump, a water seal flame arrester and other equipment, and a row (gas transmission) pipeline, namely a pipeline at the positive pressure side, is large in water vapor and high in temperature (the temperature difference in winter is close to 50 ℃). The high-temperature gas sample enters the sensor probe to easily generate condensed water, so that the precision and the service life of the gas sensor are affected and damaged.
At present, gas taking devices on gas discharging (conveying) pipelines, namely positive pressure side pipelines, are mainly classified into four types: 1. the gas taking base is additionally provided with the extension PVC pipe, and the sensor is arranged at a high position, so that the problems of complex installation, easy aging of PVC materials and the like exist; 2. the regenerated drying agent is adopted to remove moisture, the drying agent needs to be frequently replaced, the cost is high, and the method is not suitable for the dehumidification and cooling requirements of long-term monitoring; 3. the complex cooling and dehumidifying structure has the problem of frequent maintenance of personnel; 4. the temperature difference is reduced by installing the heat insulation material outside the sensor, the method does not thoroughly solve the problem of temperature difference, and meanwhile, the situation that the sensor is difficult to replace in a messy field exists.
The utility model has the following contents:
to the problem, the utility model provides a colliery gas transmission pipeline monitoring sensor gets gas condensing equipment, simple to operate, non-maintaining, can solve gas appearance and sensor probe temperature and be not less than 50 ℃ of the difference in temperature.
The utility model discloses a realize through following technical scheme: a gas taking and condensing device of a coal mine gas pipeline monitoring sensor comprises a pipeline connecting seat assembly, a gas taking and draining assembly, a condensing assembly and a sensor mounting assembly, wherein the pipeline connecting seat assembly is used for connecting a gas pipeline;
the pipeline connecting seat assembly comprises a pipeline connecting seat body and a first fastener, the pipeline connecting seat body is fixed on the gas transmission pipeline, and the pipeline connecting seat body can be detachably connected with the gas taking and water discharging assembly through the first fastener;
the gas taking and drainage assembly comprises a water pan, a differential pressure baffle, a gas taking pipe and a gas return pipe, wherein a cavity is formed in the top end of the water pan, the bottom end of the water pan can be detachably connected with the pipeline connecting seat body through a first fastening piece, the gas taking pipe and the gas return pipe are fixed at the bottom end of the water pan, the top ends of the gas taking pipe and the gas return pipe are respectively communicated with the cavity of the water pan, the bottom ends of the gas taking pipe and the gas return pipe can be communicated with a gas transmission pipeline through the pipeline connecting seat body, the differential pressure baffle is fixed at the bottom end of the water pan and arranged between the gas taking pipe and the gas return;
the condensation assembly comprises a condenser main body, an integrated spiral air passage, an air return connecting pipe and a second fastener, the integrated spiral air passage is fixed in the condenser main body, the air return connecting pipe is arranged in the integrated spiral air passage, the top end of the condenser main body is provided with an air taking port and an air return port, the air taking port is communicated with the air taking pipe through the integrated spiral air passage to form an air taking loop, the air return port is communicated with the air return pipe through the air return connecting pipe to form an air return loop, and the bottom end of the condenser main body is detachably connected with the water receiving disc through the second fastener;
the sensor installation component comprises a shell, a T-shaped block, a flow controller and a third fastener, wherein a cavity is arranged in the shell, the cavity is communicated with an air taking port and an air return port respectively, the shell is detachably connected with the condenser main body through the third fastener, the T-shaped block is fixed in the shell, and the flow controller is installed on the air return side of the cavity.
In order to facilitate the disassembly and assembly of the pipeline connecting seat body and the water pan and ensure the sealing property between the pipeline connecting seat body and the water pan, a first mounting plate is arranged at the top end of the pipeline connecting seat body, a groove is formed in the top end of the first mounting plate, and a first sealing ring is arranged in the groove; the bottom end of the water receiving disc is provided with a second mounting disc, the bottom end of the second mounting disc is provided with a groove, the first mounting disc and the second mounting disc are connected in a sealing mode through a first sealing ring, and the first mounting disc and the second mounting disc are connected in a detachable mode through a first fastener.
In order to guarantee the heat insulation effect and prevent gas leakage, be provided with first order between condenser main part bottom and the water collector and keep off hot subassembly, first order keeps off hot subassembly and includes keeping off hot circle, upper seal circle and lower seal circle, is connected through keeping off hot circle between condenser main part bottom and the water collector top, keep off hot circle top and pass through upper seal circle and condenser main part bottom seal, keep off hot circle bottom and pass through lower seal circle and condenser main part bottom seal.
In order to facilitate assembling the integrated spiral air passage, the top end of the integrated spiral air passage is detachably connected with the condenser main body through a fourth fastener.
In order to ensure the tightness of the return air, the top end and the bottom end of the return air connecting pipe are respectively provided with a sealing element.
To facilitate the installation of the T-block, the T-block is fixed centrally within the housing by a fifth fastener.
In order to achieve better heat insulation effect, a second-stage heat retaining assembly is arranged between the condenser main body and the shell.
The gas taking method of the gas taking and condensing device of the coal mine gas pipeline monitoring sensor comprises the following steps:
(1) firstly, mounting a pipeline connecting seat assembly on a gas pipeline;
(2) then assembling a gas taking and water draining component, a condensing component and a sensor mounting component, and inserting the gas taking and water draining component into the pipeline connecting seat component and communicating the gas taking and water draining component with the inner cavity of the gas transmission pipeline;
(3) the gas flow that flows in the gas transmission pipeline forms high pressure district and low-pressure region respectively in differential pressure plate both sides, and high-pressure gas gets into the integral type through getting the trachea and spirals in the air flue, and gas spirals the air flue heat exchange through the integral type, and the comdenstion water that produces among the cooling process flows back to the gas transmission pipeline along the integral type, and the gas after the cooling provides the gas appearance to the sensor to loop through flow controller, return-air connecting pipe, return-air pipe and flow back to in the gas transmission pipeline.
The utility model has the advantages that: the utility model discloses a get gas condensing equipment and get gas method, the supporting sensor uses on arranging (defeated) gas pipeline malleation side pipeline promptly, device integrated structure design, and the installation is maintained simply, and efficient structural design realizes the rapid cooling of gas appearance, and the design of simple reliable self-draining has saved personnel's maintenance cost.
Description of the drawings:
fig. 1 is a schematic structural view of the gas taking and condensing device of the coal mine gas pipeline monitoring sensor of the utility model when being installed;
fig. 2 is a sectional view of the gas taking and condensing device of the coal mine gas pipeline monitoring sensor of the utility model;
fig. 3 is a schematic perspective view of the gas-taking and water-discharging assembly of the present invention;
FIG. 4 is a cross-sectional view of the gas intake and drainage assembly of the present invention;
FIG. 5 is a schematic perspective view of the integrated spiral air passage of the present invention;
fig. 6 is a sectional view of the integrated spiral air passage of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.
The gas-taking and condensing device of the coal mine gas pipeline monitoring sensor shown in fig. 1 sequentially comprises a pipeline connecting seat component 2 used for connecting a gas pipeline 1, a gas-taking and water-discharging component 3 used for automatically extracting gas in the gas pipeline 1 and capable of discharging water, a condensing component 4 used for condensing the extracted gas and a sensor mounting component 5 used for connecting a sensor from bottom to top, and the components are detachably connected through fasteners.
Specifically, the pipe coupling housing assembly shown in FIG. 2 includes a pipe coupling housing body 21, a seal ring 22, and a clamp 23 of diameter 64 size. The pipeline connecting seat body 21 is made of 304 stainless steel materials and is welded right above the gas pipeline during construction. The upper end of the pipeline connecting seat body 21 adopts a phi 64-sized quick-mounting chuck design and can be quickly connected with the upper gas taking and water discharging assembly through a clamping hoop 23. The pipe connecting seat body 21 and the gas taking and water discharging assembly are sealed through a sealing ring 22, and gas leakage is prevented.
The gas and water intake and drainage assembly shown in fig. 2-4 comprises a differential pressure baffle plate 34, a gas intake pipe 32, a gas return pipe 33 and a water pan 31. The differential pressure baffle 34 separates the air intake pipe 32 from the air return pipe 33, and partially wraps the air return pipe 33, and the air flow flowing in the air delivery pipe forms a high pressure area at the front part of the differential pressure baffle 34 and a low pressure area at the rear part. High-pressure gas enters the device through the gas taking pipe 32 and returns to the gas transmission pipeline from the gas return pipe 33, and the function of collecting gas samples is achieved. The inner diameters of the air intake pipe 32 and the air return pipe 33 are designed to be 12mm, so that obstruction caused by water drops and coal ash can be avoided. The water pan 31 is designed in a V-shaped structure, condensed water dropping from the upper part can be collected to the bottom quickly and is discharged downwards into the gas transmission pipeline through the gas taking pipe 32 by means of gravitation, the bottom of the water pan 31 is provided with a second mounting plate 314 which is used for being mounted in a matched mode with the first mounting plate at the top of the pipeline connecting seat body, and the top of the water pan 31 is provided with a third mounting plate 313 which is used for being mounted in a matched mode with the bottom end of the condenser main body. An air inlet pipe opening 311 and an air return pipe interface 312 are formed in the water receiving tray 31, the air inlet pipe opening 311 is communicated with the air taking pipe 32, and the air return pipe interface 312 is communicated with the air return pipe 33.
The condensing assembly shown in fig. 2, 5 and 6 is composed of a condenser main body 41, an integrated spiral air duct 42, an air return connecting pipe 43, a fastening piece 44, a sealing flat gasket 47 and an external fastening piece 46. The condenser body 41 is made of 304 stainless steel and is designed to be 1.5mm thin. The top end of the condenser body 41 is provided with an air intake 411 and an air return 412, the integral spiral air passage 42 is made of aluminum, the outer circumference of the integral spiral air passage is provided with a spiral air passage 421, and the top of the integral spiral air passage is provided with a connecting hole 422. The length of the air passage is increased through the spiral design, and the cooling area is enlarged. The gas spirals from bottom to top along the spiral gas channel and exchanges heat through the condenser body 41, reaching the top of the condenser at atmospheric ambient temperature. The fastening member 44 fastens the integrated convoluted air duct 42 within the condenser body 41, and a sealing flat gasket 47 is installed between the two structural members. The condenser, the first-stage heat retaining assembly and the air-taking and water-discharging member are fastened into a whole by 4 external fasteners 46 outside the condenser main body 41. The top end and the bottom end of the air return connecting pipe 43 are respectively provided with three sealing rings 48, the two ends of the air return connecting pipe are sealed to prevent the air return connecting pipe from being communicated with the air inlet chamber, one end of the air return connecting pipe 43 is inserted into an air return opening 412 at the upper part of the condenser main body 41, the other end of the air return connecting pipe is inserted into an air return pipe connector 312 of the air taking and water discharging assembly, and an air sample in the sensor mounting seat is directly returned into the conveying.
As shown in fig. 2, a first-stage heat-blocking assembly is arranged between the bottom end of the condenser main body 41 and the water-receiving tray 31, and the first-stage heat-blocking assembly comprises a heat-blocking ring 49, an upper sealing ring and a lower sealing ring 45. The heat retaining ring 49 is made of PTFE material with the thickness of 10mm, and the heat at the bottom is prevented from being conducted upwards by utilizing the low heat conductivity of the heat retaining ring. The upper and lower seal rings 45 function as seals to prevent gas leakage.
In addition, a second-stage heat retaining ring 410 is arranged between the top end of the condenser body 41 and the sensor mounting component, and the second-stage heat retaining ring 410 is made of a fluororubber sheet with the thickness of 4mm, so that the heat at the bottom is prevented from being conducted upwards by the low thermal conductivity of the fluororubber sheet, and the sealing effect of the upper part and the lower part is achieved.
The sensor mounting assembly shown in fig. 2 comprises a housing 51, a T-block 52, a flow controller 54, internal fasteners 53, and external fasteners 57. The shell 51 is machined by using 304 materials, the phi 50.5-size quick-assembling chuck is designed to be quickly assembled or disassembled with the gas sensor through a hoop, the inner bottom end of the shell 51 is provided with a gas inlet 55 and a gas outlet 56, the gas inlet 55 is communicated with a gas taking port 411, and the gas outlet 56 is communicated with a gas return port 412. The internal T-block 52 is mounted within the housing 51 by internal fasteners 53, forming the internal chamber into an omega-shaped loop configuration, avoiding direct injection of gas to the sensor probe. The flow controller 54 adopts an inner hexagonal installation mode, is installed on the air return side and is used for controlling the air production amount, and the default opening is M1.5, and specifications of 1.0, 2.0 and the like can be replaced. The apparatus can reduce the gas flow rate by the flow control 55 to improve the cooling effect of the gas sample. The housing 51 is fastened to the condenser body 41 by 4 external fasteners 57 and the intermediate second stage heat retainer 410 provides a seal and a heat barrier.
The utility model discloses a dynamic process divide into two parts: 1. heat conduction of the gas transmission pipeline; 2. the gas taking process and the heat conduction of the gas sample.
The heat conduction process of the gas transmission pipeline comprises the following steps: the heat of the wall of the gas transmission pipeline is upwards conducted to the gas taking and water discharging assembly through the pipeline connecting seat body 21, and the temperature of the shell of the gas taking and water discharging assembly is slightly reduced due to the increase of the conduction distance and the heat dissipation of the shell; the heat of the gas taking and water discharging assembly is upwards conducted to the condensing assembly through the first-stage heat assembly, the heat conduction is very limited due to the increase of the conduction distance and the low heat conductivity of the first-stage heat assembly, the temperature reduction amplitude of the bottom of the condensing assembly is obvious, the temperature of the upper part of the condenser assembly is consistent with the ambient temperature, and the temperature of the condenser assembly is distributed from top to bottom; the lower part of the sensor mounting seat at the upper part of the device is not provided with heat source conduction and the protection of the second-stage heat shielding ring 410, and the temperature is consistent with the ambient temperature.
And (3) conducting the gas taking process and the gas sample heat: the mixed gas flows rapidly from left to right, and high and low pressure areas are formed in front of and behind a differential pressure baffle plate 34 of the gas taking and water discharging assembly; the high pressure zone gas enters the gas intake pipe 32 and flows upwards; after entering the condensation assembly, the gas spirals from bottom to top along the spiral gas passage 421 and exchanges heat with the shell, when the gas reaches the top of the condensation assembly, the temperature is consistent with the ambient temperature, and condensed water generated in the cooling process flows back to the water pan 31 along the spiral gas passage and flows back to the gas transmission pipeline through the gas taking pipe 32 by the self gravity; the cooled normal temperature gas sample enters the sensor mounting assembly to provide a gas sample to the sensor, and enters the air return connecting pipe 43 and the air return pipe 33 from the middle hole of the right flow controller 54, and returns to the low pressure area (i.e. in the pipeline) at the rear part of the differential pressure baffle plate 34. The flow controller 54 can be replaced on site to reduce or increase gas flow, reduce flow can reduce the total heat energy carried by the gas sample, increase flow rate can reduce sensor response time.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a colliery gas transmission pipeline monitoring sensor condensation device that gets gas which characterized in that: the gas pipeline comprises a pipeline connecting seat assembly used for connecting a gas pipeline, a gas taking and water discharging assembly used for automatically extracting gas in the gas pipeline and discharging water, a condensing assembly used for condensing the extracted gas and a sensor mounting assembly used for connecting a sensor;
the pipeline connecting seat assembly comprises a pipeline connecting seat body and a first fastener, the pipeline connecting seat body is fixed on the gas transmission pipeline, and the pipeline connecting seat body can be detachably connected with the gas taking and water discharging assembly through the first fastener;
the gas taking and drainage assembly comprises a water pan, a differential pressure baffle, a gas taking pipe and a gas return pipe, wherein a cavity is formed in the top end of the water pan, the bottom end of the water pan can be detachably connected with the pipeline connecting seat body through a first fastening piece, the gas taking pipe and the gas return pipe are fixed at the bottom end of the water pan, the top ends of the gas taking pipe and the gas return pipe are respectively communicated with the cavity of the water pan, the bottom ends of the gas taking pipe and the gas return pipe can be communicated with a gas transmission pipeline through the pipeline connecting seat body, the differential pressure baffle is fixed at the bottom end of the water pan and arranged between the gas taking pipe and the gas return;
the condensation assembly comprises a condenser main body, an integrated spiral air passage, an air return connecting pipe and a second fastener, the integrated spiral air passage is fixed in the condenser main body, the air return connecting pipe is arranged in the integrated spiral air passage, the top end of the condenser main body is provided with an air taking port and an air return port, the air taking port is communicated with the air taking pipe through the integrated spiral air passage to form an air taking loop, the air return port is communicated with the air return pipe through the air return connecting pipe to form an air return loop, and the bottom end of the condenser main body is detachably connected with the water receiving disc through the second fastener;
the sensor installation component comprises a shell, a T-shaped block, a flow controller and a third fastener, wherein a cavity is arranged in the shell, the cavity is communicated with an air taking port and an air return port respectively, the shell is detachably connected with the condenser main body through the third fastener, the T-shaped block is fixed in the shell, and the flow controller is installed on the air return side of the cavity.
2. The coal mine gas pipeline monitoring sensor gas extraction condensing device of claim 1, wherein: the top end of the pipeline connecting seat body is provided with a first mounting disc, the top end of the first mounting disc is provided with a groove, and a first sealing ring is arranged in the groove.
3. The coal mine gas pipeline monitoring sensor gas extraction condensing device of claim 2, wherein: the bottom end of the water receiving disc is provided with a second mounting disc, the bottom end of the second mounting disc is provided with a groove, the first mounting disc and the second mounting disc are connected in a sealing mode through a first sealing ring, and the first mounting disc and the second mounting disc are connected in a detachable mode through a first fastener.
4. The coal mine gas pipeline monitoring sensor gas extraction condensing device of claim 1, wherein: be provided with first order between condenser main part bottom and the water collector and keep off hot subassembly, first order keeps off hot subassembly and includes keeping off hot circle, upper seal circle and lower seal circle, is connected through keeping off hot circle between condenser main part bottom and the water collector top, keep off hot circle top and pass through upper seal circle and condenser main part bottom seal, keep off hot circle bottom and pass through lower seal circle and condenser main part bottom seal.
5. The coal mine gas pipeline monitoring sensor gas extraction condensing device of claim 1, wherein: the top end of the integral spiral air passage is detachably connected with the condenser main body through a fourth fastener.
6. The coal mine gas pipeline monitoring sensor gas extraction condensing device of claim 1, wherein: and sealing parts are respectively arranged at the top end and the bottom end of the air return connecting pipe.
7. The coal mine gas pipeline monitoring sensor gas extraction condensing device of claim 1, wherein: the T-shaped block is fixed in the center in the shell through a fifth fastener.
8. The coal mine gas pipeline monitoring sensor gas extraction condensing device of claim 1, wherein: and a second-stage heat-retaining component is arranged between the condenser main body and the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020292944.1U CN212156654U (en) | 2020-03-11 | 2020-03-11 | Gas taking and condensing device of coal mine gas pipeline monitoring sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020292944.1U CN212156654U (en) | 2020-03-11 | 2020-03-11 | Gas taking and condensing device of coal mine gas pipeline monitoring sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212156654U true CN212156654U (en) | 2020-12-15 |
Family
ID=73713566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020292944.1U Active CN212156654U (en) | 2020-03-11 | 2020-03-11 | Gas taking and condensing device of coal mine gas pipeline monitoring sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212156654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280346A (en) * | 2021-05-14 | 2021-08-20 | 中煤科工集团重庆研究院有限公司 | Method for reconstructing refuse landfill by using low-concentration gas oxidation treatment |
-
2020
- 2020-03-11 CN CN202020292944.1U patent/CN212156654U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280346A (en) * | 2021-05-14 | 2021-08-20 | 中煤科工集团重庆研究院有限公司 | Method for reconstructing refuse landfill by using low-concentration gas oxidation treatment |
| CN113280346B (en) * | 2021-05-14 | 2022-08-02 | 中煤科工集团重庆研究院有限公司 | Method for reconstructing refuse landfill by using low-concentration gas oxidation treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4481935A (en) | Flue pipe connection | |
| TW200400337A (en) | High efficiency water heater | |
| CN212156654U (en) | Gas taking and condensing device of coal mine gas pipeline monitoring sensor | |
| CN111379969A (en) | Gas taking and condensing device of coal mine gas pipeline monitoring sensor | |
| CN107033970B (en) | Water-coal slurry gasification furnace | |
| CN218062430U (en) | Heat exchange respiratory tube assembly of engine and engine with same | |
| CN212958759U (en) | Gas taking and condensing device of coal mine pipeline sensor | |
| CN213273226U (en) | Heat recovery balance flue of gas wall-mounted boiler | |
| CN212159236U (en) | Gas taking device of coal mine gas drainage sensor | |
| CN210197707U (en) | Heat exchange device and combustion heat equipment with same | |
| CN209101863U (en) | A kind of shell and tube cooler | |
| CN210688237U (en) | Self-cooling type cremator | |
| CN209131167U (en) | A kind of pressure type vacuum tube solar heat-collecting device | |
| CN217636201U (en) | Condensation heat exchanger and gas heater | |
| CN221122506U (en) | Air conditioning system and tent type biosafety laboratory | |
| CN217383372U (en) | Heating type condenser device for gas sampling | |
| CN211526737U (en) | Stainless steel shell structure of condensation gas furnace | |
| CN204787888U (en) | Novel medical condenser | |
| CN215571196U (en) | Gas water heater capable of improving dustproof effect | |
| CN220750417U (en) | Rainwater collection device for wall-mounted furnace | |
| CN213988728U (en) | Wind pressure switch assembly and wall-mounted furnace comprising same | |
| CN210400625U (en) | Hot metal detector with cooling structure | |
| CN219300780U (en) | Antifreezing device for gas hot water heating equipment | |
| CN220186112U (en) | Gas hanging stove intake pipe connecting device | |
| CN215723145U (en) | Tail heat absorption device of saturated steam boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |