High-temperature fuel gas sampling rake for fuel gas analysis and temperature measurement

Abstract

The utility model relates to the technical field of gas turbine measurement and analysis, and discloses a high-temperature gas sampling rake for gas analysis and temperature measurement, which comprises a first rake body, the surface of one end of the first rake body is fixedly connected with a first connecting disc, and the upper part of the first rake body is provided with a second rake body; the lower portion of the surface of one end of the second harrow body is fixedly connected with a second connecting disc, the first connecting disc and the second connecting disc are connected through a bolt and a nut, internal threads are arranged in the second harrow body, the external threads are matched with the internal threads, and the second harrow body is fixedly connected with the first connecting disc. A sampling outlet, a water inlet and a water outlet are formed in the second rake body, the water inlet is formed in the left side of the sampling outlet, and the water outlet is formed in the right side of the sampling outlet. According to the utility model, through the arrangement of the first connecting disc, the second connecting disc and the external threads, the water inlet or the sampling outlet of the sampling rake is separated from the sampling channel, and once a certain part is damaged, the part can be replaced in time, so that the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas turbine measurement and analysis, in particular to a high-temperature gas sampling rake for gas analysis and temperature measurement. Background Art

[0002] A gas sampling rake is a device used to sample gas in high-temperature, high-pressure environments. It typically consists of a sampling head, a sampling tube, and connecting components. Gas is introduced into the sampling tube through a pipe, and then sampled through the sampling head. The main function of a gas sampling rake is to obtain gas samples for analysis, monitoring, or other required operations. Write in sections (the first section should explain why the device is used).

[0003] A search revealed a high-temperature gas sampling rake for gas analysis and temperature measurement in publication number CN217542546U. The rake is integrally formed from a high-temperature alloy material, with a sampling hole formed on one end of the rake body. A transverse sampling tube and a longitudinal profiled tube are arranged within the rake body, with one end of the transverse sampling tube connected to the corresponding sampling hole and the other end of the transverse sampling tube connected to one end of the corresponding longitudinal profiled tube. A sample gas outlet is mounted on the other end of the rake body, with the other end of the longitudinal profiled tube connected to the corresponding sample gas outlet. A cooling water inlet and outlet are arranged on the other end of the sample body, on either side of the sample gas outlet, allowing cooling water to enter from one side of the sample body and exit from the other. This utility model ensures the reliability of the rake under high-temperature conditions of approximately 2300K, indirectly avoiding the problem of test termination caused by rake failure during testing. This effectively reduces the unit test time, thereby reducing test costs and improving test efficiency.

[0004] In the above application, the sampling rake is formed by integrated processing. Once the air outlet or the water inlet is damaged, the entire sampling rake must be replaced, which increases the cost. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a high-temperature gas sampling rake for gas analysis and temperature measurement, aiming to improve the sampling rake by integrated processing and molding. Once the gas outlet or water inlet is damaged, the entire sampling rake must be replaced, increasing the cost.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-temperature gas sampling rake for gas analysis and temperature measurement, comprising a first rake body, one end surface of the first rake body being fixedly connected to a first connecting plate, an external thread being provided on the upper portion of one end surface of the first rake body, a second rake body being provided on the upper portion of the first rake body, and a lower portion of one end surface of the second rake body being fixedly connected to the second connecting plate, the first connecting plate and the second connecting plate being connected by bolts and nuts, an internal thread being provided inside the second rake body, the external thread being adapted to the internal thread, a sampling outlet, a water inlet and a water outlet being provided inside the second rake body, a water inlet being provided on the left side of the sampling outlet, and a water outlet being provided on the right side of the sampling outlet.

[0007] Preferably, the first rake body is composed of a water-blocking layer, a high-temperature resistant layer, a sealing layer and a base material layer from the outside to the inside. The water-blocking layer is made of polyvinyl chloride, the high-temperature resistant layer is made of polyimide, the sealing layer is made of fluororubber, and the base material layer is made of nickel-based alloy.

[0008] Preferably, a sealing ring is provided on one end surface of the first connecting disk, and the sealing ring is smaller than the area of ​​the first connecting disk.

[0009] Preferably, the lower end surface of the second rake body is fixedly connected to a connecting pipe, a sampling channel is opened inside the connecting pipe, and a plurality of sampling holes are provided inside the connecting pipe.

[0010] Preferably, a sampling channel is provided inside the first rake body, and the sampling hole is connected to the sampling channel.

[0011] Preferably, a cooling cavity is provided inside the first rake body, the cooling cavity is U-shaped, and the aperture of the cooling cavity is the same as the aperture of the water inlet.

[0012] Preferably, the height of the water outlet is smaller than that of the water inlet.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the present invention, by providing the first connecting plate, the second connecting plate and the external thread, the first rake body and the second rake body are first connected by means of a threaded connection between the external thread and the internal thread, and then the two are tightly connected by means of bolts and nuts on the first connecting plate and the second connecting plate to prevent gas leakage. This arrangement can separate the water inlet or sampling outlet of the sampling rake from the sampling channel. Once a part is damaged, it can be replaced in time, thereby reducing costs.

[0015] 2. In the present invention, by providing the water-blocking layer, the high-temperature resistant layer and the sealing layer, the sampling rake can be used in certain special places, such as a humid environment. This also increases the corrosion resistance and the service life of the sampling rake, which is conducive to the long-term use of the sampling rake.

[0016] 3. In the present invention, the provision of the cooling cavity and the high-temperature resistant layer facilitates the use of the sampling rake in a high-temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural diagram of a high-temperature gas sampling rake for gas analysis and temperature measurement proposed by the utility model;

[0018] Figure 2 This is a structural diagram of the first sampling body, the second sampling rake body and the second connecting plate of a high-temperature gas sampling rake for gas analysis and temperature measurement proposed by the utility model;

[0019] Figure 3 This is a front cross-sectional view of a high-temperature gas sampling rake for gas analysis and temperature measurement proposed in this utility model.

[0020] Figure 4 This is a structural diagram of the components of a high-temperature gas sampling rake for gas analysis and temperature measurement proposed by the utility model.

[0021] Legend:

[0022] 1. First rake body; 2. Second rake body; 3. Sampling outlet; 4. Water inlet; 5. Water outlet; 6. First connecting plate; 7. Connecting pipe; 8. Bolt; 9. Nut; 10. External thread; 11. Second connecting plate; 12. Sealing ring; 13. Sampling channel; 14. Sampling hole; 15. Cooling chamber; 16. Water-blocking layer; 17. High-temperature resistant layer; 18. Sealing layer; 19. Base material layer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Reference Figure 1-Figure 3The utility model provides an embodiment: a high-temperature gas sampling rake for gas analysis and temperature measurement, including a first rake body 1, one end surface of the first rake body 1 is fixedly connected to a first connecting plate 6, an upper portion of one end surface of the first rake body 1 is provided with an external thread 10, a second rake body 2 is provided on the upper portion of the first rake body 1, a lower portion of one end surface of the second rake body 2 is fixedly connected to a second connecting plate 11, the first connecting plate 6 and the second connecting plate 11 are connected by bolts 8 and nuts 9, an internal thread (not shown) is provided inside the second rake body 2, the external thread 10 is adapted to the internal thread, a sampling outlet 3, a water inlet 4 and a water outlet 5 are provided inside the second rake body 2, the sampling outlet 3 is connected to a sampling device, the water inlet 4 is provided on the left side of the sampling outlet 3, and the water outlet 5 is provided on the right side of the sampling outlet 3.

[0025] Specifically, the first connecting plate 6 and the second connecting plate 11 are both provided with bolt holes, the external thread 10 is provided on the upper part of the first connecting plate 6 on the first rake body 1, and the internal thread is provided on the lower part of the second connecting plate 11 of the second rake body 2. The first rake body 1 and the second rake body 2 are first aligned and rotated to complete the docking of the two. The bolt 8 is inserted into the bolt hole of the first connecting plate 6 and the second connecting plate 11, and the nut 9 is tightened by the thread. The first rake body 1 and the second rake body 2 can be tightly connected. Conversely, when disassembling, this setting can replace the first rake body 1 or the second rake body 2.

[0026] Reference Figure 1 and Figure 4 The first rake body 1 is composed of a water-blocking layer 16, a high-temperature resistant layer 17, a sealing layer 18 and a base material layer 19 from the outside to the inside. The water-blocking layer 16 is made of polyvinyl chloride, the high-temperature resistant layer 17 is made of polyimide, the sealing layer 18 is made of fluororubber, and the base material layer 19 is made of nickel-based alloy.

[0027] Specifically, the water-blocking layer 16 is usually located at the outermost layer, and is used to prevent external moisture or liquid from penetrating into the interior of the sampling rake, protecting internal components from damage, and is used in some special places such as humid environments; the high-temperature resistant layer 17 is located below the water-blocking layer 16, and is used to withstand working conditions in a high-temperature environment and protect internal components from high temperature effects; the sealing layer 18 is located below the high-temperature resistant layer 17, and is used to ensure the sealing performance of the sampling rake in a high-pressure environment and prevent gas leakage; the base material layer 19 uses a nickel-based alloy to be corrosion-resistant, and this setting can increase the service life of the first rake body 1.

[0028] Reference Figure 1 and Figure 2 A sealing ring 12 is provided on one end surface of the first connecting plate 6 , and the sealing ring 12 is smaller than the area of ​​the first connecting plate 6 .

[0029] Specifically, the provision of the sealing ring 12 can prevent gas leakage at the connection.

[0030] Reference Figure 1 and Figure 3 The lower end surface of the second rake body 2 is fixedly connected to the connecting pipe 7 , a sampling channel 13 is opened inside the connecting pipe 7 , and a plurality of sampling holes 14 are provided inside the connecting pipe 7 .

[0031] Specifically, the gas enters the interior of the connecting pipe 7 through the sampling hole 14 , and then enters the sampling outlet 3 through the sampling channel 13 .

[0032] A sampling channel 13 is defined inside the first rake body 1 , and a sampling hole 14 is connected to the sampling channel 13 .

[0033] A cooling cavity 15 is provided inside the first rake body 1 . The cooling cavity 15 is U-shaped. The aperture of the cooling cavity 15 is the same as that of the water inlet 4 .

[0034] Specifically, this arrangement facilitates cooling water to enter the cooling cavity 15 from the water inlet 4 and then enter the water outlet 5 from the cooling cavity 15 .

[0035] Reference Figure 1 , the height of the water outlet 5 is smaller than that of the water inlet 4.

[0036] Specifically, a height difference is formed between the water outlet 5 and the water inlet 4, and the height difference is utilized to facilitate drainage.

[0037] Working principle: The first rake body 1 and the second rake body 2 are first connected through the external thread 10 and the internal thread, and then connected through the first connecting plate 6 and the second connecting plate 11 with a plurality of bolts 8 and nuts 9 to make the first rake body 1 and the second rake body 2 tightly connected. When disassembling, the connection is reversed; cooling water is introduced into the water inlet 4 and continuously passed through. The cooling water will enter the cooling chamber 15 and then be discharged from the water outlet 5.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-temperature gas sampling rake for gas analysis and temperature measurement, comprising a first rake body (1), characterized in that: One end surface of the first rake body (1) is fixedly connected to a first connecting plate (6), an external thread (10) is provided on the upper portion of one end surface of the first rake body (1), a second rake body (2) is provided on the upper portion of the first rake body (1), and a lower portion of one end surface of the second rake body (2) is fixedly connected to a second connecting plate (11), the first connecting plate (6) and the second connecting plate (11) are connected by bolts (8) and nuts (9), an internal thread is provided inside the second rake body (2), the external thread (10) being adapted to the internal thread, a sampling outlet (3), a water inlet (4) and a water outlet (5) are provided inside the second rake body (2), the water inlet (4) is provided on the left side of the sampling outlet (3), and the water outlet (5) is provided on the right side of the sampling outlet (3).

2. A high-temperature gas sampling rake for gas analysis and temperature measurement according to claim 1, characterized in that: The first rake body (1) is composed of a water-blocking layer (16), a high-temperature resistant layer (17), a sealing layer (18) and a base material layer (19) from the outside to the inside, wherein the water-blocking layer (16) is made of polyvinyl chloride, the high-temperature resistant layer (17) is made of polyimide, the sealing layer (18) is made of fluororubber, and the base material layer (19) is made of nickel-based alloy.

3. The high-temperature gas sampling rake for gas analysis and temperature measurement according to claim 1, characterized in that: A sealing ring (12) is provided on one end surface of the first connecting disk (6), and the sealing ring (12) is smaller than the area of ​​the first connecting disk (6).

4. A high-temperature gas sampling rake for gas analysis and temperature measurement according to claim 1, characterized in that: The lower end surface of the second rake body (2) is fixedly connected to a connecting pipe (7), a sampling channel (13) is provided inside the connecting pipe (7), and a plurality of sampling holes (14) are provided inside the connecting pipe (7).

5. A high-temperature gas sampling rake for gas analysis and temperature measurement according to claim 4, characterized in that: A sampling channel (13) is provided inside the first rake body (1), and the sampling hole (14) is connected to the sampling channel (13).

6. A high-temperature gas sampling rake for gas analysis and temperature measurement according to claim 1, characterized in that: A cooling cavity (15) is provided inside the first rake body (1), the cooling cavity (15) being U-shaped, and the aperture of the cooling cavity (15) being the same as the aperture of the water inlet (4).

7. The high-temperature gas sampling rake for gas analysis and temperature measurement according to claim 1, characterized in that: The height of the water outlet (5) is smaller than that of the water inlet (4).

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