0005-春卷自動成型生產(chǎn)線上的春卷皮機機械傳動結(jié)構(gòu)的設(shè)計【全套7張CAD圖+文獻(xiàn)翻譯+說明書】
0005-春卷自動成型生產(chǎn)線上的春卷皮機機械傳動結(jié)構(gòu)的設(shè)計【全套7張CAD圖+文獻(xiàn)翻譯+說明書】,全套7張CAD圖+文獻(xiàn)翻譯+說明書,春卷,自動,成型,生產(chǎn)線,機械傳動,結(jié)構(gòu),設(shè)計,全套,cad,文獻(xiàn),翻譯,說明書,仿單
電加熱鍋爐系統(tǒng)
該鍋爐以電力為能源，通過電加熱管加熱供暖、空調(diào)或衛(wèi)生用熱水，該機加 熱快、熱效率高、體積小、無噪音、模塊式供熱、節(jié)約能源、安裝使用方便、綜 合了國內(nèi)外各方面先進(jìn)技術(shù)而成的最新一代產(chǎn)品。
一、控制原理
采YLZK系列鍋爐電腦控制器。我公司吸收國外先進(jìn)技術(shù)，結(jié)合國內(nèi)鍋 爐控制自動化的各種需要和具體應(yīng)用現(xiàn)狀，采用現(xiàn)代電腦控制技術(shù)，而推出的新 一代鍋爐控制器。適用于蒸汽鍋爐、熱水鍋爐和導(dǎo)熱油爐的自動控制，具有可靠 性高、自動化程度高、使用方便、操作簡單、功能豐富、控制靈活、造型美觀、 性能價格比高等優(yōu)點。
本機采用智能模塊式工控機（IPC）作為控制系統(tǒng)的核心。智能模塊式工控 機（IPC）是一種基于串行總線的多種模塊組成的工業(yè)控制計算機系統(tǒng)。由于采 用了串行總線，它比以往采用的并行總線（如STD、PC104，ISA 等）具有更多 的優(yōu)點。它的每一個模塊就是一個帶有微處理器(CPU)的智能單元，本身具有強 大的可編程功能，可獨立完成各種復(fù)雜的單元功能，是國內(nèi)鍋爐電腦控制器中最 先進(jìn)的產(chǎn)品。
具有鍋爐水溫控制、鍋爐水位控制、回水溫度檢測、二次回水電動調(diào)節(jié)閥控 制、缺水保護(hù)、超溫保護(hù)、定時控制等自動控制功能。
管束式電熱鍋爐是該廠綜合了國內(nèi)外各方面技術(shù)而形成的新一代產(chǎn)品。它采 用模糊控制原理，結(jié)合PLC 控制器，通過溫度傳感器，構(gòu)成閉環(huán)調(diào)節(jié)系統(tǒng)。按 恒溫、節(jié)能的優(yōu)化運行原則，隨著水溫的變化，控制系統(tǒng)不斷進(jìn)行溫度采樣、邏 輯運算和人工神經(jīng)元控制算法調(diào)節(jié)運算，從而實現(xiàn)自動恒溫之目的。
二、產(chǎn)品特點
（1）利用觸摸屏作操作界面，實現(xiàn)人機對話，易懂、易學(xué)、易記，操作簡 單方便。通過顯示屏上的功能鍵可查核、設(shè)定和修改各種調(diào)節(jié)參數(shù)。
（2）系統(tǒng)控制核心PLC，其可編程序靈活性大、邏輯處理能力強，具有較 高的運行速度及可靠性。
（3）執(zhí)行機構(gòu)采用國際先進(jìn)電器元件。
（4）控制器帶內(nèi)藏式實時日歷時鐘。系統(tǒng)可按用戶要求，在任意時間設(shè)定 多個不同的溫度設(shè)定值，達(dá)到最佳節(jié)能效果。
（5）鍋爐控制柜設(shè)有斷流、超溫、超壓、短路、漏電、缺相、過流等保護(hù) 功能，鍋爐運行更加穩(wěn)定、安全。
（6）鍋爐可外設(shè)蓄熱水箱，利用夜間低谷電加熱熱水至95℃，進(jìn)行蓄熱水 箱儲存，白天利用換熱器換熱后進(jìn)行供暖，對電網(wǎng)起動削峰添谷的作用運行更加 經(jīng)濟。
（7）鍋爐可實現(xiàn)變負(fù)荷功能，衛(wèi)生熱水和空調(diào)熱水可單獨提供或交叉提供， 起到一機多用或多機同用的目的。
（8）鍋爐采用最清潔能源——電能，真正實現(xiàn)綠色環(huán)保、零污染，最大限 度地保護(hù)人類生存環(huán)境。
三、機組性能參數(shù)說明：
采暖熱水額定出口/進(jìn)口溫度：85℃/65℃（承壓電熱水出回水溫度為：95℃/70℃） 工作壓力：常壓（承壓電熱水鍋爐壓力0.7MPa/1.0MPa）
供熱量自動調(diào)節(jié)范圍（無級自動調(diào)溫）：10-100％
使用電源：380∨50Hz 允許出口溫度：85℃(規(guī)范要求<90℃)
鍋爐水質(zhì)應(yīng)附合GB1576-2001《工業(yè)鍋爐水質(zhì)》要求。
四、鍋爐的結(jié)構(gòu) 整體的結(jié)構(gòu)包括鍋爐本體和輔助設(shè)備兩大部分。鍋爐中的爐膛、鍋筒、燃燒 器、水冷壁過熱器、省煤器、空氣預(yù)熱器、構(gòu)架和爐墻等主要部件構(gòu)成生產(chǎn)蒸汽 的核心部分，稱為鍋爐本體。鍋爐本體中兩個最主要的部件是爐膛和鍋筒。
爐膛又稱燃燒室，是供燃料燃燒的空間。將固體燃料放在爐排上，進(jìn)行火床 燃燒的爐膛稱為層燃爐，又稱火床爐；將液體、氣體或磨成粉狀的固體燃料，噴 入火室燃燒的爐膛稱為室燃爐，又稱火室爐；空氣將煤粒托起使其呈沸騰狀態(tài)燃 燒，并適于燃燒劣質(zhì)燃料的爐膛稱為沸騰爐，又稱流化床爐；利用空氣流使煤粒 高速旋轉(zhuǎn)，并強烈火燒的圓筒形爐膛稱為旋風(fēng)爐。
爐膛的橫截面一般為正方形或矩形。燃料在爐膛內(nèi)燃燒形成火焰和高溫?zé)?氣，所以爐膛四周的爐墻由耐高溫材料和保溫材料構(gòu)成。在爐墻的內(nèi)表面上常敷 設(shè)水冷壁管，它既保護(hù)爐墻不致燒壞，又吸收火焰和高溫?zé)煔獾拇罅枯椛錈帷?
爐膛設(shè)計需要充分考慮使用燃料的特性。每臺鍋爐應(yīng)盡量燃用原設(shè)計的燃 料。燃用特性差別較大的燃料時鍋爐運行的經(jīng)濟性和可靠性都可能降低。
鍋筒是自然循環(huán)和多次強制循環(huán)鍋爐中，接受省煤器來的給水、聯(lián)接循環(huán)回 路，并向過熱器輸送飽和蒸汽的圓筒形容器。鍋筒簡體由優(yōu)質(zhì)厚鋼板制成，是鍋 爐中最重的部件之一。
鍋筒的主要功能是儲水，進(jìn)行汽水分離，在運行中排除鍋水中的鹽水和泥渣， 避免含有高濃度鹽分和雜質(zhì)的鍋水隨蒸汽進(jìn)入過熱器和汽輪機中。
鍋筒內(nèi)部裝臵包括汽水分離和蒸汽清洗裝臵、給水分配管、排污和加藥設(shè)備 等。其中汽水分離裝臵的作用是將從水冷壁來的飽和蒸汽與水分離開來，并盡量 減少蒸汽中攜帶的細(xì)小水滴。中、低壓鍋爐常用擋板和縫隙擋板作為粗分離元件； 中壓以上的鍋爐除廣泛采用多種型式的旋風(fēng)分離器進(jìn)行粗分離外，還用百頁窗、 鋼絲網(wǎng)或均汽板等進(jìn)行進(jìn)一步分離。鍋筒上還裝有水位表、安全閥等監(jiān)測和保護(hù) 設(shè)施。
為了考核性能和改進(jìn)設(shè)計，鍋爐常要經(jīng)過熱平衡試驗。直接從有效利用能量 來計算鍋爐熱效率的方法叫正平衡，從各種熱損失來反算效率的方法叫反平衡。 考慮鍋爐房的實際效益時，不僅要看鍋爐熱效率，還要計及鍋爐輔機所消耗的能 量。
單位質(zhì)量或單位容積的燃料完全燃燒時，按化學(xué)反應(yīng)計算出的空氣需求量稱 為理論空氣量。為了使燃料在爐膛內(nèi)有更多的機會與氧氣接觸而燃燒，實際送入 爐內(nèi)的空氣量總要大于理論空氣量。雖然多送入空氣可以減少不完全燃燒熱損 失，但排煙熱損失會增大，還會加劇硫氧化物腐蝕和氮氧化物生成。因此應(yīng)設(shè)法 改進(jìn)燃燒技術(shù)，爭取以盡量小的過量空氣系數(shù)使?fàn)t膛內(nèi)燃燒完全。
鍋爐煙氣中所含粉塵(包括飛灰和炭黑)、硫和氮的氧化物都是污染大氣的物 質(zhì)，未經(jīng)凈化時其排放指標(biāo)可達(dá)到環(huán)境保護(hù)規(guī)定指標(biāo)的幾倍到數(shù)十倍?？刂七@些 物質(zhì)排放的措施有燃燒前處理、改進(jìn)燃燒技術(shù)、除塵、脫硫和脫硝等。借助高煙 囪只能降低煙囪附近地區(qū)大氣中污染物的濃度。
煙氣除塵所使用的作用力有重力、離心力、慣性力附著力以及聲波、靜電等。 對粗顆粒一般采用重力沉降和慣性力的分離，在較高容量下常采用離心力分離除 塵靜電除塵器和布袋過濾器具有較高的除塵效率。濕式和文氏—水膜除塵器中水 滴水膜能粘附飛灰，除塵效率很高還能吸收氣態(tài)污染物。
二十世紀(jì)50 年代以來，人們努力發(fā)展灰渣綜合利用，化害為利。如用灰渣 制造水泥、磚和混凝土骨料等建筑材料。70 年代起又從粉煤灰中提取空心微珠， 作為耐火保溫等材料。
鍋爐未來的發(fā)展將進(jìn)一步提高鍋爐和電站熱效率；降低鍋爐和電站的單位功 率的設(shè)備造價；提高鍋爐機組的運行靈活性和自動化水平；發(fā)展更多鍋爐品種以 適應(yīng)不同的燃料；提高鍋爐機組及其輔助設(shè)備的運行可靠性；減少對環(huán)境的污染。
Electric boiler system
The boiler to electric power for energy, heating through the electric heating tube heating, air conditioning or sanitation with hot water, heating it faster, high thermal efficiency, small size, no noise, modular heating, energy conservation, the installation of easy to use, a combination of all aspects of domestic and foreign advanced technology from the latest generation of products.
NO.1 Control Principle
Boiler YLZK series used computer controller. I absorb advanced foreign technology companies, combined with domestic boiler control automation applications and specific needs of the status quo, the use of modern computer-controlled technology, and the introduction of a new generation of boiler controller. Apply to steam boilers, hot water boilers and automatic control of heat-conducting oil furnace, high reliability, high degree of automation, easy to use, easy to operate, feature-rich, flexible control, beautiful model, high cost performance.
This machine adopts intelligent modular IPC (iPC) as the core control system. Smart Modular Industrial Computer (iPC) is a serial bus based on a variety of industrial control modules computer systems. As a result of the serial bus, which used more than ever parallel bus (such as STD, PC104, ISA, etc.) have more advantages. It is each module with a microprocessor (CPU) of the intelligent unit, itself a powerful programmable function independently of the unit features a variety of complex, computer controller boiler is the most advanced products.
With the boiler water temperature control, boiler water level control, backwater temperature detection, the second backwater valve electric control, water protection, over-temperature protection, automatic control functions such as timing control. Control the plant-type electric boiler is a combination of various aspects of technology at home and abroad to form a new generation of products. It uses the principle of fuzzy control, combined with PLC controllers, temperature sensors, the system constitutes a closed-loop regulation. By temperature and the optimal operation of the principle of energy conservation, with changes in temperature, the temperature control system for continuous sampling, logic and artificial neural computing control algorithms adjust operations in order to achieve the purpose of automatic thermostat.
NO.2 Features
(1) for the use of touch-screen interface, the realization of human-computer dialogue, easy-to-understand, easy to learn, easy to remember, easy to operate. Through the screen to check the function keys can be set and modify a variety of adjustment parameters.
(2) the core system control PLC, great flexibility of its programmable logic processing capability with high speed and reliability.
(3) organizations to adopt the international advanced the implementation of electrical components.
(4) Controller with Built-in real-time clock calendar. System users can request, at any time to set up a number of different temperature settings to achieve the best energy-saving effect.
(5) boiler control cabinet has a stop, over-temperature, over-pressure, short circuit, leakage, lack of phase, such as over-current protection, the boiler is running more stable and safe.
(6) to peripheral storage boiler water storage tanks, the use of night-time trough of hot water heating to 95 ℃, storage tanks for storage, the day after the use of heat exchangers for heat exchangers for power grid Valley start-up the role of Tim Clipping run more economy.
(7) boiler load function can be changed, health water and air-conditioning or hot water can be provided separately to provide cross-play of a machine or machines with multi-purpose use.
(8) boilers to use the most clean energy-electricity, true green, zero emission, to maximize the protection of human life.
NO.3 Unit performance parameters Description:
Rated hot water heating export/import Temperature: 85 ℃/65 ℃ (a backwater pressure electric water temperature: 95 ℃/70 ℃)
Working pressure: atmospheric pressure (pressure electric water boiler and pressure 0.7MPa/1.0MPa)
The scope for automatic adjustment of heat (no thermostat level) :10-100%
Power: 380v 50Hz
Allowed outlet temperature: 85 ℃ (specification <90 ℃)
All boiler water should be attached to GB1576-2001 "industrial boiler water" requirement.
NO.4 Boiler structure:
The overall structure of the boiler and auxiliary equipment of two major parts. Boiler in the furnace, drum, burner, wall superheater, economizer, air preheater, furnace wall structure and composition of major components of the core of the production of steam, known as the boiler. Boiler in the two most important components are the furnace and the drum.
Also known as furnace combustion chamber, fuel combustion for space. Will be on solid fuel on the grate for the fire-bed combustion furnace known as the layer burning stoves, also known as the fire-bed furnace; will be liquid, gas or ground into a powder of the solid fuel, is injected into the combustion chamber of the furnace of fire known as the Room burning furnace, furnace room, also known as the fire; air will hold its coal combustion was boiling and low-grade fuel for combustion furnace known as the boiling furnace, also known as the fluidized bed furnace; the use of coal particles of air flow so that high-speed rotation, and strongly burning furnace of cylindrical furnace known as the Tornado.
Furnace cross-section of generally square or rectangular. Fuel combustion in the furnace flame and high temperature flue gas to form, so the stove around the furnace wall by the high temperature materials and thermal insulation materials. In the furnace wall on the inner surface of the regular laying of water-wall tube, it will not burn the protection of furnace wall and the flame and high temperature flue gas to absorb the large number of radiant heat. Furnace designed to take full account of the characteristics of the use of fuel. Each boiler shall be fueled with the original design as much as possible fuel. Burning characteristics of the larger difference in fuel economy when the boiler operation and reliability can be reduced.
Drum is a natural cycle and multiple forced circulation boiler, the economizer to accept the water supply, circuit connection to the steam superheater cylinder delivery device described. Traditional drum made from high quality thick steel plate is a boiler in one of the most important components.
Drum's main function is water, soft drinks to the separation of pot ruled out running in the saline water and mud residue, to avoid high concentrations of salt and impurities in the boiler water with the steam entering the superheater and the steam turbine in.
Device includes an internal drum separator and steam cleaning equipment, water distribution pipes, sewage processing equipment such as drugs. Separator device which is to come from the wall and the saturated steam from the water and to minimize the steam in small water droplets carried. , The low-pressure boilers used as a baffle and baffle gap separating coarse components; over medium-pressure boiler in addition to a variety of widely used types of cyclone for the separation of rough, but also with 100 windows, steel mesh or steam, etc. are carried out further separated. Drum water level is also equipped with a table, a safety valve, such as monitoring and protection facilities.
To assess performance and to improve the design, often have to go through the boiler heat balance test. Directly from the efficient use of energy to calculate the thermal efficiency of boiler is a balanced approach is called, from a variety of heat loss to the efficiency of counter-balance method is called counter-balance. Consider the practical benefits of the boiler room not only depends on the thermal efficiency of boilers, but also taking into account the auxiliary boiler and the amount of energy.
Unit mass or unit volume of fuel combustion, the chemical reaction is calculated according to the theory of air known as air traffic demand. In order to make the fuel in the furnace, there are more opportunities for contact with oxygen combustion, the actual volume of air into the furnace is greater than the total theoretical air. Although more air into the incomplete combustion can reduce heat loss, but the smoke will increase heat loss, but also exacerbate corrosion of sulfur oxides and nitrogen oxides generated. Therefore efforts should be made to improve the combustion technology for small to minimize the excess air ratio so that the combustion chamber completely.
Boiler flue gas contained dust (including fly ash and carbon black), oxides of sulfur and nitrogen pollution in the atmosphere are the material, without purification of their emission targets can be achieved several times indicators of environmental protection provisions of the several dozen times. Emissions control measures of these substances have a pre-combustion, improved combustion technology, dedusting, desulfurization and denitrification, such as. High chimney with only the area around the chimney to reduce atmospheric concentrations of pollutants.
Flue gas dust removal of the force used by gravity, centrifugal force, inertia force of adhesion, as well as sound waves, static electricity and so on. Generally used for coarse particle sedimentation and inertial force of gravity separation, at a high capacity centrifugal separation under the regular use of electrostatic precipitators and bag dust filter with high collection efficiency. And the Sultan's wet-water film dust collector in the droplet adhesion film can fly, can absorb a very high collection efficiency of gaseous pollutants.
The twentieth century since the 50's, people strive to develop comprehensive utilization of ash, Wei of harm. Ash manufacturers such as cement, brick and concrete aggregate and other construction materials. 70s extract from fly ash from Cenosphere, such as a fire-resistant insulation materials.
Boiler future development will further enhance the thermal efficiency of boilers and power plants; boilers and power plants to reduce the unit cost of power equipment; to improve the operation of boiler unit level of flexibility and automation; to develop more varieties to suit different boiler fuel; raise the boiler unit and its the operation of auxiliary equipment reliability; to reduce environmental pollution.
收藏