Flushing nozzle, flushing device and coke oven gas pipe flushing method

Abstract

The invention belongs to the technical field of flushing, and discloses a flushing nozzle, a flushing device and a coke oven gas pipe flushing method. The inner space of the shell is divided into a liquid inlet cavity, a jet flow cavity and a slow flow cavity which are sequentially distributed in the first direction, a liquid guide hole is formed in the first partition plate, an extending hole communicated with the outside of the shell is formed in the cavity wall of the slow flow cavity, and a first liquid inlet is formed in the cavity wall of the liquid inlet cavity. The conical plugging piece is arranged in the jet flow cavity and can slide in the first direction, and the diameter of the large-diameter end of the conical plugging piece is larger than the hole diameter of the liquid guide hole. When the hydraulic pressure of the liquid inlet cavity is larger than a first threshold value, the conical plugging piece slides and is pulled out of the liquid guide hole, and meanwhile the outlet end of the jet pipe is driven to stretch out of the shell from the stretching-out hole. When the hydraulic pressure of the liquid inlet cavity is smaller than a first threshold value, under the action of the elastic piece, the conical plugging piece slides to be inserted into the liquid guide hole, and meanwhile the outlet end of the jet pipe is driven to retract into the slow flow cavity.

Description

Technical Field

[0001] The invention relates to the technical field of flushing, and in particular to a flushing nozzle, a flushing device and a coke oven gas pipe flushing method. Background Art

[0002] The resistance of the gas pipeline from the primary cooler to the fan is generally around 700Pa. After the coke oven gas is cooled by the primary cooler, the flow rate in the gas pipeline in front of the fan after the electric precipitator slows down. As the temperature drops to around 25°C, some tar, naphthalene, and coal powder are deposited here. When they accumulate to a certain amount, the resistance of this section of the pipeline shows a slow upward trend during the production process, affecting the passage of gas. The resistance gradually increases and directly affects the suction force in front of the primary cooler, seriously affecting the normal operation of the gas negative pressure system. The increase in suction force in front of the primary cooler directly causes the pressure of the coke oven gas collecting pipe to remain high, which finally leads to serious smoke when the coke oven is loaded with coal. In order to reduce the system resistance, some of the electric precipitator bypass valves had to be opened, resulting in the original 20mg / m 3 The tar mist in the following coal gas rises to nearly 100 mg / m 3 The increase of coal gas tar mist has a great negative impact on the operation of subsequent deamination, debenzene and desulfurization systems.

[0003] In the coke oven gas purification system, the coke oven gas is first cooled by the primary cooler, and most of the coal tar gas, most of the water vapor and naphthalene in the gas are condensed, providing a guarantee for the subsequent gas purification. At present, the primary cooler reduces the gas temperature by circulating water and low-temperature water in two stages. Coke oven gas contains a certain amount of naphthalene, which condenses into solids when the temperature drops, causing tar, naphthalene, coal powder and other impurities to adhere to the inner wall of the pipeline, especially the bottom of the pipeline is prone to slag accumulation, blocking the pipeline and reducing the gas diameter, reducing the coke oven gas flow, and the tar, naphthalene and impurities on the wall of the primary cooler affect the gas circulation. Summary of the invention

[0004] One object of the present invention is to provide a flushing nozzle that can achieve both the effect of soaking and dissolving stubborn impurities and the effect of flushing and cleaning.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Flushing nozzles, including:

[0007] A shell, a first partition and a second partition, wherein the first partition and the second partition are arranged in the shell at intervals along a first direction, and divide the internal space of the shell into a liquid inlet chamber, a jet chamber and a slow flow chamber which are sequentially distributed along the first direction, the first partition is provided with a liquid guide hole, a protruding hole communicating with the outside of the shell is provided on the cavity wall of the slow flow chamber, and a first liquid inlet is provided on the cavity wall of the liquid inlet chamber;

[0008] a conical plugging member, the conical plugging member being disposed in the jet chamber and being capable of sliding along the first direction, the diameter of the large-diameter end of the conical plugging member being larger than the diameter of the liquid guide hole;

[0009] an elastic member connected to the conical blocking member;

[0010] A jet tube, the jet tube is connected to the conical plugging member, the jet tube is provided with a second liquid inlet, and the second liquid inlet is communicated with the jet chamber;

[0011] When the hydraulic pressure of the liquid inlet chamber is greater than a first threshold value, the conical plugging member slides and is withdrawn from the liquid guide hole, and at the same time drives the outlet end of the jet tube to extend out of the housing through the extension hole;

[0012] When the hydraulic pressure of the liquid inlet chamber is less than the first threshold value, under the action of the elastic member, the conical plugging member slides into the liquid guide hole and drives the outlet end of the jet tube to retract into the slow flow chamber.

[0013] Optionally, it also includes a guide seat and a guide rod, the guide seat is arranged in the liquid inlet chamber, the guide rod is slidably arranged on the guide seat along the first direction, the small diameter end of the conical sealing member is arranged on the guide rod, and the diameter of the guide rod is smaller than the aperture of the liquid guide hole.

[0014] Optionally, the jet tube is slidably disposed in the second partition along the first direction and is dynamically sealed with the second partition.

[0015] Optionally, a scattering nozzle is further included, the extension hole is coaxial with the jet tube, the scattering nozzle is arranged at the outlet end of the jet tube, and the spraying range of the scattering nozzle is larger than the diameter of the extension hole.

[0016] Optionally, the jet tube is coaxial with the guide rod.

[0017] Optionally, the elastic member is sleeved on the jet tube, with one end pressed against the second partition plate and the other end pressed against the large diameter end of the conical blocking member.

[0018] Another object of the present invention is to provide a flushing device that can achieve both the effect of soaking and dissolving stubborn impurities and the effect of flushing and cleaning.

[0019] To achieve this object, the present invention adopts the following technical solutions:

[0020] A flushing device, comprising the above-mentioned flushing nozzle, and further comprising a flow regulating member and a liquid supply assembly, wherein the liquid supply assembly is connected to the first liquid inlet of the flushing nozzle, and the flow regulating member is used to regulate the supply flow of the liquid supply assembly.

[0021] Optionally, the flushing device further comprises a heating element, and the heating element is connected to the liquid supply assembly.

[0022] Another object of the present invention is to provide a coke oven gas pipe flushing method, which can achieve both the effect of soaking and dissolving stubborn impurities in the coke oven gas pipe and the effect of flushing and cleaning.

[0023] To achieve this object, the present invention adopts the following technical solutions:

[0024] The coke oven gas pipe flushing method is implemented by using the above-mentioned flushing device, and comprises the following steps: the heating element heats the cleaning liquid, the liquid supply component supplies the cleaning liquid to the flushing nozzle, and the flushing nozzle delivers the cleaning liquid to the gas pipe.

[0025] Optionally, the gas pipe is installed at a slope of 3‰-7‰.

[0026] Beneficial effects of the present invention:

[0027] The flushing nozzle, flushing device and coke oven gas pipe flushing method provided by the present invention have the following advantages: when the hydraulic pressure is greater, the jet tube extends longer and is closer to the impurity area; higher hydraulic pressure and shorter spacing significantly increase the flushing intensity of the impurity area; when the hydraulic pressure is smaller, the jet tube retracts, and the cleaning liquid passes through the slow flow chamber and overflows from the extension hole; the spacing between the flushing nozzle and the impurity area is changed to the distance between the extension hole and the impurity area; the small hydraulic pressure and the buffering of the slow flow chamber make the flow rate slower, so that the impurity area is fully soaked; the flushing nozzle is adjusted according to the cleaning needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a flushing nozzle provided by an embodiment of the present invention in an immersion state;

[0029] Figure 2 is a schematic structural diagram of a flushing nozzle provided by an embodiment of the present invention in a flushing state;

[0030] Figure 3 It is an overall schematic diagram of a flushing nozzle used in the coke oven gas pipe flushing method provided in an embodiment of the present invention.

[0031] In the figure:

[0032] 100, flushing nozzle; 101, housing; 102, first partition; 103, second partition; 104, liquid inlet chamber; 105, jet chamber; 106, slow flow chamber; 107, liquid guide hole; 108, extension hole; 201, conical plugging member; 301, elastic member; 401, jet tube; 402, second liquid inlet; 501, guide seat; 502, guide rod;

[0033] 601, flow regulating member; 602, liquid supply assembly; 603, heating member;

[0034] 701. Gas pipe; 702. Intermediate slag storage tank; 703. Slag pump; 704. Control console. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] like Figure 1 and Figure 2 As shown, this embodiment provides a flushing nozzle 100. The flushing nozzle 100 includes a housing 101, a first partition 102, a second partition 103, a conical blocking member 201, an elastic member 301 and a jet tube 401.

[0040] like Figure 1 As shown, the first partition 102 and the second partition 103 are arranged in the housing 101 at intervals along the first direction, and the internal space of the housing 101 is divided into a liquid inlet chamber 104, a jet chamber 105 and a slow flow chamber 106 which are sequentially distributed along the first direction. A liquid guide hole 107 is provided on the first partition 102, a protruding hole 108 communicating with the outside of the housing 101 is provided on the cavity wall of the slow flow chamber 106, and a first liquid inlet is provided on the cavity wall of the liquid inlet chamber 104. The first liquid inlet is used to connect the liquid supply component 602, and the liquid supply component 602 inputs the flushing cleaning liquid from the first liquid inlet into the liquid inlet chamber 104. In this embodiment, the first direction is a straight line direction, which is also the length direction of the housing 101.

[0041] like Figure 1 and Figure 2 As shown, the conical plugging member 201 is disposed in the jet chamber 105 and can slide along the first direction, and the diameter of the large diameter end of the conical plugging member 201 is larger than the aperture of the liquid guide hole 107. The elastic member 301 is connected to the conical plugging member 201, and the elastic member 301 is used to provide a driving force for the conical plugging member 201, so that the conical plugging member 201 has a tendency to be inserted into the liquid guide hole 107.

[0042] The jet tube 401 is connected to the conical plugging member 201, and a second liquid inlet 402 is provided on the jet tube 401, and the second liquid inlet 402 is connected to the jet chamber 105. Figure 2 As shown, when the hydraulic pressure of the liquid inlet chamber 104 is greater than the first threshold, the conical plugging member 201 slides and is withdrawn from the liquid guide hole 107, and at the same time drives the outlet end of the jet tube 401 to extend out of the housing 101 from the extension hole 108. Figure 1 As shown, when the hydraulic pressure of the liquid inlet chamber 104 is less than the first threshold, under the action of the elastic member 301 , the conical blocking member 201 slides into the liquid guide hole 107 and drives the outlet end of the jet tube 401 to retract into the slow flow chamber 106 .

[0043] The cleaning liquid enters the liquid inlet chamber 104 from the first liquid inlet, and under the action of the hydraulic pressure, pushes the conical sealing member 201 away from the liquid guiding hole 107, thereby forming a liquid guiding gap between the liquid guiding hole 107 and the conical sealing member 201. The cleaning liquid enters the jet chamber 105 from the liquid guiding gap, enters the second liquid inlet 402 from the jet chamber 105, and then enters the jet tube 401 from the second liquid inlet 402, and flows out from the outlet end of the jet tube 401.

[0044] The greater the hydraulic pressure of the liquid inlet chamber 104, the greater the distance between the conical plugging component 201 and the liquid guide hole 107, driving the jet tube 401 to approach the extension hole 108. When the hydraulic pressure of the liquid inlet chamber 104 is greater than the first threshold value, the jet tube 401 extends out of the housing 101 and is closer to the impurity area. Moreover, the hydraulic pressure flowing out of the jet tube 401 is also very large at this time, flushing the impurity area. On the basis of the first threshold value, the hydraulic pressure of the liquid inlet chamber 104 is further increased until the distance between the conical plugging component 201 and the liquid guide hole 107 reaches the farthest, the length of the outlet end of the jet tube 401 extending outward is the largest, and at the same time, the jet hydraulic pressure is the largest, the flushing intensity is large, and the cleaning effect is good.

[0045] The smaller the hydraulic pressure of the liquid inlet chamber 104, the deeper the conical plugging piece 201 is inserted into the liquid guide hole 107, driving the jet tube 401 to retract into the slow flow chamber 106. When the hydraulic pressure of the liquid inlet chamber 104 is less than the first threshold, the jet tube 401 retracts into the housing 101. The cleaning liquid needs to pass through the slow flow chamber 106 before flowing out of the jet tube 401 and out of the extension hole 108. The distance between the flushing nozzle 100 and the impurity area is the distance between the extension hole 108 and the impurity area. Moreover, the hydraulic pressure flowing out of the jet tube 401 is also reduced at this time, which is conducive to the slow flow soaking of the impurity area. On the basis of the first threshold, the hydraulic pressure of the liquid inlet chamber 104 is further reduced until the large diameter end of the conical plugging piece 201 is connected to the edge of the liquid guide hole 107, the liquid guide gap is minimized, the flow rate is minimized, and the flow rate is minimized.

[0046] The flushing nozzle 100 provided in this embodiment has a larger hydraulic pressure, and the jet tube 401 extends longer and is closer to the impurity area. The higher hydraulic pressure and shorter spacing significantly increase the flushing intensity of the impurity area. The smaller the hydraulic pressure, the jet tube 401 retracts, and the cleaning liquid flows through the slow flow chamber 106 and overflows from the extension hole 108. The spacing between the flushing nozzle 100 and the impurity area is changed to the distance between the extension hole 108 and the impurity area. The small hydraulic pressure and the buffer of the slow flow chamber 106 make the flow rate slower, fully immersing the impurity area, and the flushing nozzle 100 is adjusted according to the cleaning needs.

[0047] like Figure 1 and Figure 2As shown, optionally, the flushing nozzle 100 further includes a guide seat 501 and a guide rod 502, wherein the guide seat 501 is disposed in the liquid inlet chamber 104, the guide rod 502 is slidably disposed on the guide seat 501 along the first direction, the small diameter end of the conical plugging member 201 is disposed on the guide rod 502, and the diameter of the guide rod 502 is smaller than the aperture of the liquid guide hole 107. On the small diameter side of the conical plugging member 201, the guide rod 502 is slidably disposed on the guide seat 501, thereby providing guidance for the movement of the conical plugging member 201, ensuring the movement trajectory of the conical plugging member 201, and thus ensuring reliable adjustment of the flushing nozzle 100.

[0048] Optionally, the jet tube 401 is slidably disposed in the second partition plate 103 along the first direction and is dynamically sealed with the second partition plate 103. Specifically, the jet tube 401 is fixedly connected to the conical plugging member 201, the second partition plate 103 provides a guide for the sliding of the jet tube 401, and the jet tube 401 provides a guide for the conical plugging member 201 at the large diameter end of the conical plugging member 201, thereby realizing reliable adjustment of the flushing nozzle 100. The dynamic sealing method of the jet tube 401 is not limited, and illustratively, it can be sealed by a rubber ring.

[0049] like Figure 1 and Figure 2 As shown, in this embodiment, the conical blocking member 201 includes a conical liquid baffle plate, and the deeper the conical baffle plate is inserted from the jet chamber 105 into the liquid inlet chamber 104 , the smaller the flow rate of the liquid guide hole 107 .

[0050] Optionally, the flushing nozzle 100 further includes a scattering nozzle, the extension hole 108 is coaxial with the jet tube 401, the scattering nozzle is arranged at the outlet end of the jet tube 401, and the spraying range of the scattering nozzle is larger than the diameter of the extension hole 108. When the scattering nozzle is outside the slow flow chamber 106, the scattering nozzle directly rinses the impurity area, and when the scattering nozzle is in a state of retracting the slow flow chamber 106 with the jet tube 401, the scattering nozzle scatters the cleaning liquid to the slow flow chamber 106, the slow flow chamber 106 slows the flow of the cleaning liquid, and the cleaning liquid flows outward from the extension hole 108. The provision of the scattering nozzle is conducive to giving full play to the slow flow effect of the slow flow chamber 106 and improving the slow flow effect.

[0051] like Figure 1 and Figure 2 As shown, optionally, the jet tube 401 is coaxially arranged with the guide rod 502. The coaxial arrangement of the jet tube 401 and the guide rod 502 is conducive to maintaining the movement stability of the conical plugging member 201, the jet tube 401 and the guide rod 502 in the housing 101, and is conducive to ensuring reliable adjustment of the flushing nozzle 100.

[0052] like Figure 1 and Figure 2As shown, optionally, the elastic member 301 is sleeved on the jet tube 401, with one end pressed against the second partition plate 103, and the other end pressed against the large diameter end of the conical plugging member 201. Although the arrangement of the elastic member 301 is simple, it can provide the conical plugging member 201 with an elastic reset force in the first direction, thereby adjusting the opening of the liquid guide hole 107. Specifically, the elastic member 301 is a compression spring.

[0053] like Figure 3 As shown, this embodiment also provides a flushing device, which includes the above-mentioned flushing nozzle 100, and the flushing device also includes a flow regulating member 601 and a liquid supply assembly 602. The liquid supply assembly 602 is connected to the first liquid inlet of the flushing nozzle 100, and the flow regulating member 601 is used to adjust the supply flow of the liquid supply assembly 602. The liquid supply assembly 602 supplies cleaning liquid to the first liquid inlet of the flushing nozzle 100, and the flow regulating member 601 adjusts the supplied flow. The greater the flow, the greater the hydraulic pressure of the liquid inlet chamber 104, and the smaller the flow, the smaller the hydraulic pressure of the liquid inlet chamber 104, thereby realizing stepless adjustment of the flushing nozzle 100 between the immersion mode and the flushing mode. Optionally, the flow regulating member 601 is a flow valve. The liquid supply assembly 602 includes an ammonia liquid supply system.

[0054] like Figure 3 As shown, optionally, the flushing device further includes a heating element 603, and the heating element 603 is connected to the liquid supply component 602. The cleaning liquid is heated by the heating element 603 to keep the cleaning liquid at a suitable temperature, which is conducive to the chemical reaction during the soaking and flushing process, improves the dissolution effect, and thus improves the cleaning effect. In this embodiment, the added element is a steam generator, which heats the ammonia water through steam.

[0055] like Figure 3 As shown, this embodiment provides a coke oven gas pipe flushing method, which is implemented by the above-mentioned flushing device. The coke oven gas pipe flushing method comprises the following steps: the heating element 603 heats the cleaning liquid, the liquid supply component 602 supplies the cleaning liquid to the flushing nozzle 100, and the flushing nozzle 100 delivers the cleaning liquid to the gas pipe 701. According to the flushing needs, the flow regulating element 601 is used to intermittently change the pressure of the cleaning liquid, so that the flushing nozzle 100 is switched between the immersion state and the flushing state, so as to effectively clean the impurities in the gas pipe 701.

[0056] In this embodiment, the cleaning liquid is ammonia water. Ammonia water comes from the blast cooling system and does not need to be purchased additionally, thus reducing production costs. After washing, the slag liquid in the gas pipe 701 is sent to the scraping tank through the slag storage intermediate tank 702 and the slag pump 703, and then returned to the circulating ammonia water system used in the coke oven production, so that no new waste liquid is generated, and the operation method is more environmentally friendly.

[0057] In this embodiment, the heating element 603 heats the ammonia water to about 80° C. At this temperature, the ammonia water has a good effect of dissolving impurities such as tar and naphthalene.

[0058] Specifically, when the flow valve is opened and the ammonia pressure is high, the jet tube 401 extends to flush the tar residue deposited on the gas pipe 701, increase the injection intensity, and achieve a better jet effect. When the flow valve is closed, under the action of the elastic member 301, the jet tube 401 is retracted into the slow flow chamber 106, and the high-temperature ammonia water is buffered by the slow flow chamber 106 and then flows out at a relatively slow speed to soak and dissolve the tar residue, achieving a better dissolving effect.

[0059] After using this method to clean the gas pipe 701, the resistance of the gas pipe 701 was reduced from the original 3000Pa to below 650Pa, and the smoke problem of the coke oven after coal loading was improved. In addition, the bypass valves of the electric capture were all closed, and the tar dust of the gas after the fan was restored to 20mg / m 3 Below the normal value level, the entire cleaning process is safe and has no hidden dangers, which not only achieves the cleaning effect but also ensures the normal progress of production.

[0060] Optionally, the gas pipe 701 is installed at a slope of 3‰-7‰. The flushing nozzle 100 is set at a high position of the gas pipe 701, and flushing is performed along the slope of the gas pipe 701 during flushing, which is conducive to the discharge of dissolved tar residue (containing impurities such as tar, naphthalene, and coal powder). In this embodiment, the gas pipe 701 is installed at a slope of 5‰.

[0061] The washing process in this embodiment can be operated on the console 704, realizing remote operation and convenient operation. At the site of the gas pipe 701, the temperature of the outer wall of the gas pipe 701 can be verified and monitored by an infrared thermometer.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Flushing nozzle, characterized in that, include: A shell (101), a first partition (102) and a second partition (103), wherein the first partition (102) and the second partition (103) are arranged in the shell (101) at intervals along a first direction, and divide the internal space of the shell (101) into a liquid inlet chamber (104), a jet chamber (105) and a slow flow chamber (106) which are sequentially distributed along the first direction, the first partition (102) is provided with a liquid guide hole (107), the cavity wall of the slow flow chamber (106) is provided with a protruding hole (108) which is connected to the outside of the shell (101), and the cavity wall of the liquid inlet chamber (104) is provided with a first liquid inlet; a conical plugging member (201), the conical plugging member (201) being arranged in the jet chamber (105) and being capable of sliding along the first direction, the diameter of the large-diameter end of the conical plugging member (201) being larger than the aperture of the liquid guide hole (107); An elastic member (301), the elastic member (301) being connected to the conical blocking member (201); A jet tube (401), the jet tube (401) being connected to the conical plugging member (201), the jet tube (401) being provided with a second liquid inlet (402), the second liquid inlet (402) being in communication with the jet chamber (105); When the hydraulic pressure of the liquid inlet chamber (104) is greater than a first threshold value, the conical blocking member (201) slides and is withdrawn from the liquid guide hole (107), and at the same time drives the outlet end of the jet tube (401) to extend out of the housing (101) through the extension hole (108); When the hydraulic pressure of the liquid inlet chamber (104) is less than the first threshold value, under the action of the elastic member (301), the conical blocking member (201) slides into the liquid guide hole (107), and at the same time drives the outlet end of the jet tube (401) to retract into the slow flow chamber (106).

2. The flushing nozzle according to claim 1, characterized in that: It also includes a guide seat (501) and a guide rod (502), wherein the guide seat (501) is arranged in the liquid inlet chamber (104), and the guide rod (502) is slidably arranged on the guide seat (501) along the first direction, and the small diameter end of the conical sealing member (201) is arranged on the guide rod (502), and the diameter of the guide rod (502) is smaller than the aperture of the liquid guide hole (107).

3. The flushing nozzle according to claim 2, characterized in that: The jet tube (401) is slidably disposed in the second partition plate (103) along the first direction, and is dynamically sealed with the second partition plate (103).

4. The flushing nozzle according to claim 3, characterized in that: It also includes a scattering nozzle, the extension hole (108) is coaxial with the jet tube (401), the scattering nozzle is arranged at the outlet end of the jet tube (401), and the spraying range of the scattering nozzle is larger than the diameter of the extension hole (108).

5. The flushing nozzle according to claim 3, characterized in that: The jet tube (401) is coaxial with the guide rod (502).

6. The flushing nozzle according to claim 1, characterized in that: The elastic member (301) is sleeved on the jet tube (401), with one end pressed tightly against the second partition plate (103) and the other end pressed tightly against the large-diameter end of the conical blocking member (201).

7. Flushing device, characterized in that, The flushing device comprises a flushing nozzle as described in any one of claims 1 to 6, and further comprises a flow regulating member (601) and a liquid supply assembly (602), wherein the liquid supply assembly (602) is connected to a first liquid inlet of the flushing nozzle (100), and the flow regulating member (601) is used to regulate the supply flow of the liquid supply assembly (602).

8. The flushing device according to claim 7, characterized in that: The flushing device further comprises a heating element (603), and the heating element (603) is connected to the liquid supply component (602).

9. A coke oven gas pipe flushing method, characterized in that: The flushing device as claimed in claim 8 is implemented, comprising the following steps: the heating element (603) heats the cleaning liquid, the liquid supply component (602) supplies the cleaning liquid to the flushing nozzle (100), and the flushing nozzle (100) transports the cleaning liquid to the gas pipe (701).

10. The coke oven gas pipe flushing method according to claim 9, characterized in that: The gas pipe (701) is installed with a slope of 3‰-7‰.

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