包装袋（洗衣粉）

Heat exchanger, heat exchanger processing method and composite material

The invention provides a heat exchanger, a treatment method of the heat exchanger and a composite material. The heat exchanger comprises a collecting pipe, fins and a plurality of heat exchange pipes. The heat exchange pipe is fixed with the collecting pipe, and an inner cavity of the heat exchange pipe is communicated with an inner cavity of the collecting pipe; the fins are located between every two adjacent heat exchange tubes. The heat exchanger further comprises a coating. The coating is arranged on at least one part of the outer surface of at least one of the collecting pipes, the heat exchange pipes and the fins in a covering mode. The coating comprises micro-nano particles and a polymer formed by polymerizing monomers; the micro-nano particles comprise silicon dioxide and/or titanium dioxide modified by hydrophilic groups, and the monomers corresponding to the polymer comprise allyl monomers with hydrophilic groups. The coating of the heat exchanger is excellent in hydrophilic durability ...

包装袋

Pipeline gesture is magnetism shielding structure for check out test set

... 本实用新型公开了一种管道姿态检测设备用磁屏蔽结构，属于石油化工和天然气管道检测系统结构领域。本实用新型提供的管道姿态检测设备用磁屏蔽结构，包括圆柱状屏蔽罩和搭接于所述屏蔽罩上的屏蔽盖，所述屏蔽盖的中部向下凹陷形成凹陷部，位于所述凹陷部外周的所述屏蔽盖的部分为安装部，安装部用于与所述屏蔽罩连接。本实用新型提供的管道姿态检测设备用磁屏蔽结构保护屏蔽结构内部的敏感器件在弱磁场环境下能够正常工作，同时，屏蔽盖包括安装部与凹陷部，安装部为较厚的承重结构，保证磁屏蔽结构的稳定性，凹陷部凹陷于安装部，减轻了磁屏蔽结构的重量。 ...

Sterilizer with exhaust hood

... 本实用新型公开了一种具有排风罩的灭菌柜，包括灭菌柜柜体，所述柜体内设置有灭菌室，所述柜体顶部设置有压力蒸汽第一进气管道和压力蒸汽第二进气管道，所述柜体底部设置有空气第一排气管道和空气第二排气管道，所述柜体上还设置有用于测量灭菌柜内部压力的第一压力表、用于测量灭菌室内部压力的第二压力表和用于测量灭菌室内部温度的压力指示温度计，所述柜门上方处还设置有与外部排风系统连接的排风罩。本实用新型的灭菌柜，进气口在上，排气口在下，利用蒸汽比空气轻，通过向灭菌柜送入蒸汽，由上层逐渐将冷空气挤压至下层排气口排出，结构简单、造价低、适用范围广，通过在柜门上方处设置与外部排风系统连接的排风罩使得本实用新型排风效果更佳。 ...

Craft decoration box made of shells

The invention discloses a craft decoration box made of shells, and relates to the technical field of craft decoration boxes, the craft decoration box comprises a main body, a movable shaft is movably installed in the middle of the rear end of the main body, cover plates are fixedly installed on the surfaces of the left side and the right side of the movable shaft, and a clamping block is fixedly installed on the side edge of the top end of the main body. According to the craft decoration box made of the shells, the first vertical adjusting baffle, the transverse adjusting baffle and the second vertical adjusting baffle are arranged on the inner surface of the vertical adjusting groove and the inner surface of the transverse adjusting groove; the size of the blocking space of the inner cavity of the main body is adjusted in the vertical adjusting groove and the transverse adjusting groove through the first vertical adjusting baffle, the transverse adjusting baffle and the second vertical ...

Heat exchanger and treatment method of heat exchanger

The invention provides a heat exchanger and a treatment method of the heat exchanger. The heat exchanger comprises a collecting pipe, fins and a plurality of heat exchange pipes. The heat exchange pipe is fixed with the collecting pipe, and an inner cavity of the heat exchange pipe is communicated with an inner cavity of the collecting pipe; at least parts of the fins are fixed between two adjacent heat exchange tubes; the heat exchanger further comprises a coating. The coating is arranged on at least one part of the outer surface of at least one of the collecting pipes, the heat exchange pipes and the fins in a covering mode. The coating comprises a first matching layer; the first matching layer is in direct contact with at least one of the collecting pipes, the heat exchange pipes and the fins; or at least one other functional film layer is arranged between the first matching layer and at least one of the collecting pipe, the heat exchange pipe and the fin at intervals; the first matching ...

Liquid crystal dimming device

The invention relates to a liquid crystal dimming device which comprises a base material coated with a transparent conducting layer and a liquid crystal composition clamped between the base material and added with dichroic dye. The obtained liquid crystal dimming device can have at least two stable states which are still kept basically stable after voltage evacuation, at least one stable state is that liquid crystal molecules are arranged basically in order, and at least one stable state is that the liquid crystal molecules are arranged in a multi-domain and disordered mode. External voltage enables the arrangement of the liquid crystal molecules to be quickly switched between the stable states, and liquid crystal molecule arrangement different from the stable states can be obtained; according to the liquid crystal dimming device, incident light can be adjusted between highly clear and transparent minimum absorption and minimum scattering states and maximum absorption and maximum scattering ...

Treatment method of heat exchanger and heat exchanger

The invention provides a treatment method of a heat exchanger and the heat exchanger, the treatment method of the heat exchanger comprises the following steps: the heat exchanger is provided, the heat exchanger comprises a collecting pipe, fins and a plurality of heat exchange pipes which are fixed together, the inner cavities of the heat exchange pipes are communicated with the inner cavity of the collecting pipe, and the fins are arranged in the collecting pipe; the fins are fixedly connected between the two adjacent heat exchange tubes; and the heat exchanger is subjected to sand blasting treatment, so that at least part of the outer surface of the metal base material corresponding to at least one of the collecting pipes, the fins and the heat exchange pipes forms a rough surface. The sand blasting treatment is beneficial to removing attached impurities on the outer surface of the metal base material, the danger and pollution of the process are reduced, and meanwhile, the rough surface ...

Flexible lining pipe offshore installation method

The invention discloses a flexible lining pipe offshore installation method which comprises the following steps that expansion bends at the two ends of a flat pipe section of a pipeline to be maintained are dismantled, a steel wire rope and a lining pipe are bundled, and traction and cutting off of the lining pipe on the two sides of the flat pipe section are achieved through traction of a winch. Seawater between the lining pipe and the flat pipe section is discharged through the drainage one-way valve arranged on the connector outer sleeve, and the pipeline is restored by installing the expansion bend. According to the offshore installation method for the flexible lining pipe, the whole construction can be completed without going to ocean platforms at the two ends, that is, the whole project construction is carried out from flat pipe sections, vertical pipes and expansion bends are independently replaced, and the lining pipe penetrating process is carried out on the seabed; the problems ...

高频等离子体裂解天然气合成 C#-[2]烃类物的方法

The present invention is high-frequency plasma natural gas cracking process of synthesizing C2 hydrocarbon. After natural gas with methane content of about 90% is fed into reactor with specific electrodes via flowmeter, high-frequency power supply of 500 W-100 KW power and 1-25 MHz frequency is applied to the electrodes, vacuum inside the reactor is regulated to 0.001-0.1 MPa and power supply output power is regulated to produce stable glow discharge and produce plasma, so that methane is stimulated inside the plasma region to produce great amount of active free radicals CH3, CH2 and CH, which form new C2 hydrocarbon via collision. The process has methane converting rate of 24.02-77.5 %, C2 hydrocarbon yield of 20.50-76.79 % and C2 hydrocarbon selectivity of 85.35-98.96 %. The product is made to enter the storing tank via a vacuum pump.

Heat exchanger and composite material for heat exchanger

The invention provides a heat exchanger, the heat exchanger is provided with a channel used for fluid circulation, the heat exchanger comprises a base body and a hydrophobic coating arranged on at least part of the surface of the base body in a covering mode, and the hydrophobic coating comprises a low-surface-energy silane material and corrosion inhibition particles dispersed in the low-surface-energy silane material. The low-surface-energy silane materials and the corrosion inhibition particles in the hydrophobic coating have a synergistic effect, so that the heat exchanger has more excellent corrosion resistance compared with an existing heat exchanger. The invention further provides the composite material for the heat exchanger. The composite material comprises a solvent, the low-surface-energy silane material and the corrosion inhibition particles. The composite material can form an anti-corrosion coating on the surface of the heat exchanger, and the corrosion resistance of the heat ...

Vacuum infusion flame-retardant resin and preparation method thereof

The invention provides a vacuum infusion flame-retardant resin and a preparation method thereof. The vacuum infusion flame-retardant resin comprises the following components or a reaction product of the following components: 100 parts by weight of isocyanate; 5-300 parts by weight of epoxy resin; 0.1-5 parts by weight of a catalyst; the flame retardant comprises at least one of a nitrogen element, a phosphorus element and a silicon element, and the viscosity of the liquid flame retardant at 25 DEG C is less than 1000 mPas. According to the vacuum infusion flame-retardant resin provided by the invention, through the synergistic effect of the intrinsic flame retardant and the liquid flame retardant, a good flame-retardant effect is achieved, the viscosity of a resin system is low, the technological operability and the carbon fiber impregnation effect are improved, and the vacuum infusion flame-retardant resin has a relatively high glass-transition temperature and can be used for preparing ...

Hospital dress

... 本发明提供了种病服，包括前片；所述病服为长褂式结构；所述病服的前片设置有开口，开口处设置有连接件。与现有技术相比，本发明所述病服不仅方便患者穿戴，方便需实施紧急抢救的患者迅速脱下，而且避免了患者为了穿戴普通病服的上衣和长裤而大幅度动作所引起的疼痛；所述病服使患者进行检查或者治疗时，只需解开相应身体部位的病服开口，而不必脱掉整件病服，不仅避免了反复穿脱病服所带给患者的疼痛，也减轻了医护人员的劳动负担，同时还保护了患者的隐私。 ...

Novel safe lithium cell

... 本实用新型公开了一种新型安全锂电池，包括锂电池电芯、电路板和外壳，其特征是：所述的锂电池电芯的电极耳分别使用电路板连接在一起，锂电池电芯和电路设在外壳内，锂电池电芯与外壳之间设有隔离层，隔离层包裹在锂电池电芯外表面；所述的锂电池电芯的电极耳高于隔离层。本实用新型拥有稳定性高、结构简单、性价比高以及寿命长的优点，本实用新型广泛适用于电池领。 ...

Toughening prepreg

The present invention provides a toughening prepreg, which comprises: a matrix adhesive film, which is prepared from a first component comprising a matrix resin, a first curing agent and an optional first accelerator; a toughening layer made of a first component comprising a toughening layer resin, a second curing agent, and optionally a second accelerator; the curing temperature of the toughening layer resin is lower than the curing temperature of the matrix resin. The prepreg has the advantages that the viscosity of the matrix resin is low, technological operation is facilitated, the impregnation effect is good, the prepared prepreg can keep good viscosity, and a prepared laminated board is high in compression strength after being impacted.

Preparation method of low-viscosity prepolymer, thermoplastic prepreg and composite material gas cylinder

The invention relates to a preparation method of a low-viscosity prepolymer, a thermoplastic prepreg and a composite material gas cylinder, and mainly solves the problems that in the prior art, a thermoplastic resin matrix has poor wettability on reinforced fibers, and the fibers are difficult to recover. The low-viscosity prepolymer is prepared from raw materials including an epoxy compound, a bisphenol compound and a catalyst, and the viscosity of the low-viscosity prepolymer at 70 DEG C is 3-60 Pa.s. A low-viscosity prepolymer obtained through reaction of an in-situ polymerization type thermoplastic epoxy resin composition is firstly used for impregnating reinforced fibers to obtain a thermoplastic prepreg, the thermoplastic prepreg is slit into a prepreg tape, the prepreg tape is wound on the surface of the inner container, and the thermoplastic composite material winding forming gas cylinder is obtained through heating curing. The resin has a good impregnating effect on the reinforced ...

Benzoxazine composition and prepreg and laminated board thereof

The invention provides a benzoxazine composition for a prepreg, the prepreg and a laminated board. The benzoxazine composition is prepared from 100 parts of benzoxazine resin, 10 to 60 parts of phosphorus-containing flame retardant, 0.1 to 1 part of expansible graphite and 0.5 to 5 parts of accelerant. The prepreg is obtained after reinforced fibers are impregnated with the composition. The impregnating effect of the resin matrix on the reinforced fibers is good, the flame retardant property of the laminated board can reach EN45545-2HL3 level, and meanwhile, the mechanical property and the heat resistance are excellent; the preparation process is simple, the material source is wide, the requirement on the production environment is not harsh, the industrial production is convenient, and a better technical effect is achieved.

Heat exchanger and composite material for heat exchanger

The heat exchanger is provided with a channel for fluid circulation, the heat exchanger comprises a base body and a hydrophobic coating covering at least part of the surface of the base body, the hydrophobic coating comprises a low-surface-energy silane material and filler dispersed in the low-surface-energy silane material, and the filler comprises at least two kinds of particles. The shapes of the at least two types of particles are different. The particles in different shapes are compounded, so that the particles have a good filling effect in the hydrophobic coating, the compactness of the coating is improved, the barrier effect of the hydrophobic coating on a corrosive medium is improved, and the corrosion resistance of the heat exchanger is improved. The composite material provided by the invention comprises a solvent, a low-surface-energy silane material and a filler, the filler comprises at least two particles, and the shapes of the at least two particles are different. The composite ...

Prepreg toughening layer

The invention provides a prepreg toughening layer. The prepreg toughening layer is prepared by performing film forming treatment on a specific resin composition. The resin composition includes an epoxy resin, an organic acid, and a thermoplastic resin or includes a pre-reaction product of the epoxy resin and the organic acid, the thermoplastic resin, and a catalyst. The prepreg toughening layer provided by the invention solves the problems of high system viscosity, high preparation difficulty and poor fiber impregnation effect caused by direct toughening of a resin matrix. Besides, the prepreg toughening layer is directly attached to the surface of the prepreg in the preparation process of the prepreg, so that additional technological processes do not need to be added, and the post-impact compression strength of the laminated board can be remarkably improved.

Locking device of ram blowout preventer

The invention discloses a ram blowout preventer locking device, and relates to the technical field of ram blowout preventers, the ram blowout preventer locking device comprises a ram shaft, and a first boss is arranged on the peripheral side of the ram shaft; the self-locking mechanism comprises a locking sleeve, a locking rod, a wedge block, a locking seat and a locking rod axial pushing piece, and the locking rod and the locking sleeve are in threaded connection to form a thread pair structure; a second boss is arranged on the peripheral side of the locking sleeve. A rotating piece I or a smooth layer is arranged between the locking sleeve and the flashboard shaft; the driving block can drive the locking sleeve and the flashboard shaft; the driving block can enable the wedge block to extrude and push or release along the radial direction of the locking sleeve so as to lock or loosen the locking sleeve in a friction manner; the friction surface of the locking seat can abut against the ...

Small -size silence generator unit with prevent infrared detection

... 本实用新型涉及一种具有防红外探测的小型静音发电机组，其特征在于：箱体（13）内设有集气室（1）、工作室（3）和进气室（6），发动机（4）和发电机（5）设置在箱体（13）的工作室（3）内，散热水箱（2）安装在集气室（1）与工作室（3）之间的隔断上，在箱体（13）靠近发电机（5）端的进气室（6）内安装有进气口（7），箱体（13）的下部设有混流室（10）、消声器（9）和进风口（11）。本实用新型是对小型静音发电机组排出的热风进行冷热空气混合达到降温，机组出来的热风温度与自然环境温度相接近，使小型静音发电机组达到红外隐身效果。 ...

Substation equipment installation and maintenance operation platform

The invention discloses a substation equipment installation and maintenance operation platform. The platform comprises a stabilizing table; the horizontal moving mechanism is arranged on the stabilizing table; the lifting mechanism is arranged at the movable end of the horizontal moving mechanism; and the working platform is arranged at the movable end of the lifting mechanism. According to the scheme, through cooperative use of the horizontal moving mechanism and the lifting mechanism, adjustment of the position and the height of the working platform can be achieved, and therefore the working range of workers can be enlarged, operation of the workers is facilitated, and the working efficiency of the workers is improved.

Wall face flatness detection device

... 本实用新型公开了墙面平整度检测装置，它涉及种建筑标准测试辅助装置。它的测试器本体内开设有电池仓，报警器固定在测试器本体内，连接件固定在测试器本体的侧壁上，测试器本体的下端设置有标准平面板，标准平面板内开设有个测试孔，测试孔内固定有测试用微动开关，微动开关的后端与测试器本体之间设置有伸缩杆，标准平面板与测试器本体之间也设有伸缩杆，测试器本体的上表面连接有驱动装置，控制装置也设在测试器本体的上表面；所述连接件上有手扶杆，连接件内部开设有连接长杆用的螺孔；所述电池仓开设在测试器本体的侧壁上；所述微动开关为常开开关。本实用新型有益效果为：它成本低，对于些较高、面积较大的墙体，方便实施测量。 ...

Treatment method of heat exchanger and heat exchanger

The treatment method of the heat exchanger comprises the following steps that the heat exchanger and a composite material are provided, the heat exchanger comprises a collecting pipe, fins and a plurality of heat exchange pipes, the heat exchange pipes are fixed to the collecting pipe, inner cavities of the heat exchange pipes communicate with an inner cavity of the collecting pipe, and the fins are arranged in the collecting pipe; at least parts of the fins are fixed between the two adjacent heat exchange tubes; the composite material comprises a solvent and an organosilane low-surface-energy modified material, and the composite material covers at least part of the outer surface of at least one of the collecting pipe, the heat exchange pipe and the fins and is cured. The heat exchanger obtained through treatment has good hydrophobic performance.

Auxiliary paving device for ceramic tiles

The invention provides an auxiliary tile paving device. The auxiliary tile paving device comprises a base, a lifting rope winding and unwinding device, walking wheels arranged on the bottom face of the base and a lifting assembly arranged on the base. The hoisting assembly comprises two groups of hoisting units, and the two groups of hoisting units are arranged on the base in a sliding manner; the lifting unit comprises a lifting rope, a movable pulley, a suction cup, a stand column, a Y-direction lifting arm and a fixed pulley, the lower end of the stand column is slidably arranged in the X-direction slide way of the base, the Y-direction lifting arm is arranged on the stand column, the fixed pulley is arranged at the end, close to the stand column, of the Y-direction lifting arm, the movable pulley is arranged at the end, away from the stand column, of the Y-direction lifting arm, and the movable pulley can be adjusted in position in the Y direction; one end of the lifting rope is connected ...

Resin composition and resin material for resin transfer molding process

The invention provides a resin composition and a resin material for a resin transfer molding process, and the resin composition comprises the following components in parts by weight: 10-80 parts of benzoxazine resin; 10 to 80 parts of bismaleimide resin; the reactive diluent comprises at least one of compounds with a structure as shown in a formula (1) in the specification. The resin composition provided by the invention has the advantages that (1) the viscosity at the injection temperature (90 DEG C) is low, the pot life is long, and the storage life is long; and (2) the cured resin is free of bubbles and defects and low in shrinkage rate. And (3) the cured resin has high Tg and excellent mechanical properties.