Valve for fine adjustment of coke oven heating single vertical flue gas
By designing a fine gas regulating valve for coke oven heating system, the problem of difficult to finely adjust the gas flow in the coking industry is solved, and a wide adjustment range and high accuracy are achieved, saving gas and reducing carbon emissions.
Patent Information
- Application Number
- CN202421789122.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-26
AI Technical Summary
When controlling gas flow in the single fire channel for coking oven heating in the coking industry, it is necessary to continuously replace the orifices in the pipeline, resulting in cumbersome operations, affecting production, and difficult to achieve fine adjustment.
A valve with fine adjustment of the valve hole opening through a coke oven heated single-line fire channel gas is designed. The combination of a fine-tuning sleeve and valve stem is used to achieve fine adjustment of the valve hole opening through fine threads and seals.
It realizes fine adjustment of gas flow, with a wide adjustment range and high accuracy, and can be accurate to 0.165mm², saving gas, improving coke quality, extending the life of the coke oven body, and reducing carbon emissions.
Smart Images
Figure CN223035836U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of industrial valves, and specifically to a valve for fine adjustment of single vertical flue gas in coke oven heating, which is applied to the fine adjustment of gas in the coke oven heating system in the coking industry. Background Art
[0002] At present, the gas regulation principle in the coke oven combustion chamber is as follows: small orifice plates with sizes ranging from 10 mm to 18 mm are configured in the pipe unions of traditional processes, and the gas volume is adjusted according to different coking times and straight-line temperatures to meet the specified standard temperature. However, due to the large and cumbersome workload of replacing the small orifice plates, a series of problems are caused, which have a great impact on the production cost, quality and environmental protection of coke.
[0003] Specifically, when controlling the gas flow in a single vertical flue of coke oven heating in the current coking industry, it is necessary to continuously replace the orifice plate in the pipeline. Such replacement operations are very cumbersome and affect the normal production of the coke oven. Therefore, a valve that can finely adjust the gas flow in the flue is needed. Summary of the Utility Model
[0004] In order to solve the technical problem that when controlling the gas flow in a single vertical flue of coke oven heating in the current coking industry, it is necessary to continuously replace the orifice plate in the pipeline and it is difficult to achieve fine adjustment, the utility model provides a valve for fine adjustment of single vertical flue gas in coke oven heating.
[0005] The utility model is realized by adopting the following technical scheme: A valve for fine adjustment of single vertical flue gas in coke oven heating includes a valve body; a valve rod channel is opened in the valve body from top to bottom, and a valve hole communicated with the lower part of the valve rod channel is opened in the lower part of the valve body; it also includes a fine adjustment sleeve and a valve rod; a fine pitch internal thread is opened on the inner wall of the lower part of the valve rod channel; an opening is provided at the top of the valve body, the valve rod extends into the valve rod channel through the opening, a fine pitch external thread is opened on the lower part of the valve rod and is screwed with the internal thread in the valve rod channel to control the opening of the valve hole; a sealing member is arranged between the valve rod and the inner wall of the upper part of the valve rod channel; the bottom of the fine adjustment sleeve is open, and it is sleeved outside the valve body from top to bottom, and the top of the fine adjustment sleeve is fixedly connected with the top of the valve rod.
[0006] The lifting of the valve rod is driven by the fine adjustment sleeve, thereby controlling the opening of the valve hole.
[0007] Further, nominal diameter scale lines indicating the opening of the valve hole are engraved on the side wall of the valve body.
[0008] Further, the internal thread of the valve rod channel and the external thread of the valve rod are M20×1 fine pitch threads; scale lines obtained by equally dividing the fine pitch thread into 100 parts are engraved on the circumferential side wall of the fine adjustment sleeve near the bottom.
[0009] Further, the valve stem is composed of three sections from top to bottom: a connecting section, a sealing section, and a threaded section. The outer diameter of the connecting section is the smallest. The sealing section is matched with the valve stem channel. The seal is fixed on the upper inner wall of the valve stem channel and contacts the sealing section to achieve sealing. The outer diameter of the threaded section is between that of the connecting section and the sealing section, and an external thread is provided on the threaded section. The fine-tuning sleeve is provided with a top plate, and a hexagonal hole is opened in the center of the top plate. A hexagonal boss is provided at the top of the connecting section and is sleeved into the hexagonal hole at the top of the fine-tuning sleeve. A screw hole is opened downward from the top of the hexagonal boss into the inside of the connecting section. The top of the connecting section and the top of the fine-tuning sleeve are connected by a set screw screwed into the screw hole.
[0010] Further, an upper limit snap ring for limiting the valve stem is fixed at the top of the valve stem channel inside the valve body.
[0011] Further, the valve body is composed of two upper and lower parts. The upper part is in a straight cylinder shape, and the lower part has a hexahedron cross-section structure. The cross-section of the valve hole is in an elongated shape with the major axis in the vertical direction. The fine-pitch internal thread and the valve hole are both located inside the lower part of the valve body.
[0012] Further, the seal is made of a fluororubber sealing ring.
[0013] Advantages of the utility model:
[0014] 1. The adjustment range is wide, adjustable from a φ8 diameter to a φ25 diameter.
[0015] 2. After one-time replacement, the subsequent workload is small, saving manpower and financial resources.
[0016] 3. The adjustment is precise, and it can be accurate to an amount of 0.165 mm². It can achieve precise temperature control, save gas, improve the quality of coke, and extend the service life of the coke oven body.
[0017] 4. Prevent blockage. After blockage occurs, adjust the upper and lower control valve stems to clean the attached substances to achieve the purpose of dredging.
[0018] 5. Through fine adjustment, the consumption of gas is reduced, and the carbon emission in coke production is overall reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 Schematic structural diagram of the utility model.
[0020] Figure 2 Schematic structural diagram of the valve body.
[0021] Figure 3 Schematic structural diagram of the fine-tuning sleeve.
[0022] Figure 4 Schematic structural diagram of the valve stem.
[0023] 1 - Fine - tuning sleeve, 2 - Valve stem, 3 - Valve body, 4 - Fluoro - rubber sealing ring, 5 - Upper limit snap ring, 6 - M20×1 fine - thread, 7 - Screw hole, 8 - Set screw, 9 - Hexagonal hole, 10 - Hexagonal boss. Detailed implementation mode
[0024] The utility model is a complete subversion of the traditional orifice - plate gas flow regulating device. By finely adjusting the valve, it can directly adjust the gas flow of a single combustion chamber, and the gas path diameter can reach an accuracy of one - tenth of a millimeter. At the same time, this valve can not only be applied to gas flow regulation, but also be used for fine regulation of the flow of other fluid media in other fields. The following further explains the utility model with reference to the drawings and embodiments.
[0025] Embodiment 1 As Figure 1 shown, a valve for fine - tuning the gas of a single vertical flue in coke oven heating includes a valve body 3; a valve - stem channel is opened in the valve body 3 from top to bottom, and a valve hole communicating with the lower part of the valve - stem channel is opened at the lower part of the valve body 3; it also includes a fine - tuning sleeve 1 and a valve stem 2; a fine - thread internal thread is opened on the inner wall of the lower part of the valve - stem channel; an opening is provided at the top of the valve body 3, the valve stem 2 extends into the valve - stem channel through the opening, a fine - thread external thread is opened at the lower part of the valve stem 2 and is screwed with the internal thread in the valve - stem channel to control the opening of the valve hole; a sealing member is arranged between the valve stem 2 and the inner wall of the upper part of the valve - stem channel; the bottom of the fine - tuning sleeve 1 is open, and it is sleeved outside the valve body 3 from top to bottom, and the top of the fine - tuning sleeve 1 is fixedly connected with the top of the valve stem 2. Nominal diameter graduation lines indicating the opening of the valve hole are engraved on the side wall of the valve body 3, and the graduation lines are all engraved on the outer side wall of the valve body after being measured in advance. In this way, when rotating the fine - tuning sleeve, the opening size of the valve hole can be observed in real time (the graduation line aligned with the bottom of the fine - tuning sleeve is the opening size of the valve hole). The internal thread in the valve - stem channel and the external thread of the valve stem 2 are M20×1 fine - thread 6; graduation lines dividing the fine - thread into 100 equal parts are engraved on the circumferential side wall of the fine - tuning sleeve 1 near the bottom.
[0026] Embodiment 2 As Figure 3 、 4 shown, the valve stem 2 is composed of a connecting section, a sealing section and a threaded section from top to bottom. Among them, the outer diameter of the connecting section is the smallest, the sealing section is matched with the valve - stem channel, the sealing member is fixed on the inner wall of the upper part of the valve - stem channel and contacts with the sealing section to achieve sealing; the outer diameter of the threaded section is between the connecting section and the sealing section, and the external thread is opened on the threaded section; the fine - tuning sleeve 1 is provided with a top plate, a hexagonal hole 9 is opened in the center of the top plate, a hexagonal boss 10 is provided at the top of the connecting section and is sleeved into the hexagonal hole 9 at the top of the fine - tuning sleeve, a screw hole 7 is opened from top to bottom in the center of the top of the connecting section (starting from the hexagonal boss), and the top of the connecting section and the top of the fine - tuning sleeve 1 are connected by a set screw 8 screwed into the screw hole 7 (the head of the set screw is locked with the top plate of the fine - tuning sleeve). The specifications of both the hexagonal hole 9 and the hexagonal boss 10 are 7×7. The specifications of both the screw hole and the set screw are M5.
[0027] Example 3: Inside the valve body 3, an upper limit snap ring 5 for limiting the valve stem 2 is fixed at the top of the valve stem passage. The upper limit snap ring 5 can limit the sealing section.
[0028] Example 4: As Figure 2 shown, the valve body 3 is composed of upper and lower halves. The upper half is in a straight cylinder shape, and the lower half has a hexahedron cross-section structure. The cross-section of the valve hole is in an elongated axis shape and the long axis is in a vertical direction; the fine-pitch internal thread and the valve hole are both located inside the lower half of the valve body 3.
[0029] Example 5: The seal is a fluororubber seal ring 4.
[0030] The fabrication and application of the present utility model are as follows:
[0031] 1. The valve for fine adjustment of single vertical flue gas in coke oven heating (fine adjustment valve for coke oven combustion chamber gas) is made of stainless steel. A fine adjustment sleeve 1 and a valve stem 2 are connected by a hexagon and fixed with an M5 screw, and they are connected as a whole.
[0032] 2. The present utility model is a valve that is finely adjusted by manually rotating the fine adjustment sleeve 1 to drive the valve stem 2 to rotate and cooperating with the nominal diameter scale line on the valve body 3. The seal of the valve uses a fluororubber seal ring 4 for sealing. The valve stem 2 is made of 45# steel and is ground after heat treatment, ensuring strength and surface finish and enhancing the sealing effect. The front fine-pitch thread cooperates with the valve body 3 to achieve fine adjustment.
[0033] 3. The valve body 3 is precision cast from 45# steel to ensure the airtightness of the valve. All processing uses high-precision numerical control machining to ensure the consistency and precision of the product. The internal M20×1 fine-pitch thread cooperates with the valve stem 2. A fluororubber seal ring 4 is installed inside the valve body 3 to cooperate with the ground valve stem 2 for sealing.
[0034] 4. The fine adjustment scale is laser engraved on the fine adjustment sleeve 1, and the M20×1 fine-pitch thread of the valve body 3 is accurately divided into 100 equal parts. To achieve a more refined effect. The adjustment amount of the hole diameter is refined to 0.165 mm².
[0035] 5. An upper limit snap ring 5 is installed on the upper part of the valve body 3 to prevent the valve stem 2 from coming out.
[0036] This device has been fully installed in the gas heating system of the No. 2 Coke Oven Plant of Shanxi Yangguang Coking Group, a 2×65-hole JN60-6 type 1.4 million top-loading coke oven, with a total of 4224 vertical flue gas adjustment devices for 132 combustion chambers, and has achieved good economic results. At the same standard temperature, the transverse row coefficient of the coke oven is increased to 1.0, and the gas consumption per ton of coke is reduced by 5 m³. It can be seen that the present utility model can be widely applied in coke ovens with coke oven gas heating.
Claims
1. A valve for finely regulating gas in a single-passage coke oven heating system, comprising a valve body (3); a valve stem passage is formed inside the valve body (3) from top to bottom, and a valve hole is formed at the bottom of the valve body (3) and communicates with the bottom of the valve stem passage; the valve body (3) is characterized in that: It also includes a fine-tuning sleeve (1) and a valve stem (2); the lower inner wall of the valve stem channel is provided with a fine pitch internal thread; the top of the valve body (3) is provided with an opening, the valve stem (2) extends into the valve stem channel through the opening, the lower part of the valve stem (2) is provided with a fine pitch external thread and is screwed together with the internal thread of the valve stem channel to control the opening of the valve hole; a sealing member is provided between the valve stem (2) and the upper inner wall of the valve stem channel; the bottom of the fine-tuning sleeve (1) is open, and it is sleeved on the outside of the valve body (3) from top to bottom, and the top of the fine-tuning sleeve (1) is fixedly connected to the top of the valve stem (2).
2. A valve for finely regulating gas for heating a single flue of a coke oven as claimed in claim 1, characterized in that: The side wall of the valve body (3) is engraved with nominal diameter scale lines indicating the valve hole opening.
3. A valve for finely regulating gas for heating a single flue of a coke oven as claimed in claim 2, characterized in that: The internal thread of the valve stem channel and the external thread of the valve stem (2) are M20´1 fine pitch threads (6); a scale line obtained by dividing the fine pitch threads into 100 equal parts is engraved on the circumference of the side wall of the fine adjustment sleeve (1) near the bottom.
4. A valve for finely regulating gas for heating a single flue of a coke oven as claimed in claim 3, characterized in that: The valve stem (2) is composed of three sections from top to bottom: a connecting section, a sealing section and a threaded section, wherein the connecting section has the smallest outer diameter, the sealing section cooperates with the valve stem channel, the sealing member is fixed to the upper inner wall of the valve stem channel and contacts the sealing section to achieve sealing; the threaded section has an outer diameter between the connecting section and the sealing section, and an external thread is opened on the threaded section; the fine-tuning sleeve (1) is provided with a top plate, a hexagonal hole (9) is opened at the center of the top plate, a hexagonal boss (10) is provided at the top of the connecting section and is inserted into the hexagonal hole (9) at the top of the fine-tuning sleeve (1), a screw hole (7) is opened from the top of the hexagonal boss (10) downward to the inside of the connecting section, and the top of the connecting section and the top of the fine-tuning sleeve (1) are connected by a set screw (8) screwed into the screw hole (7).
5. A valve for finely regulating gas for heating a single flue of a coke oven as claimed in any one of claims 1 to 4, characterized in that: An upper limit retaining spring (5) for limiting the position of the valve stem (2) is fixed at the top of the valve stem passage inside the valve body (3).
6. A valve for finely regulating gas for heating a single flue of a coke oven as claimed in any one of claims 1 to 4, characterized in that: The valve body (3) is composed of an upper and lower half, the upper half being in the shape of a straight cylinder, and the lower half being in the shape of a hexahedron in cross section, wherein the cross section of the valve hole is in the shape of a long axis and the long axis is in a vertical direction; the fine pitch internal thread and the valve hole are both located in the lower half of the valve body (3).
7. A valve for finely regulating gas for heating a single flue of a coke oven as claimed in any one of claims 1 to 4, characterized in that: The sealing element is a fluororubber sealing ring (4).