35 results about "Long spacing" patented technology

A method of determining formation density in a cased hole environment using a logging tool having a gamma ray source, a long spacing detector, and a short spacing detector that includes developing one or more cased hole calibration relationships that utilize differences between scattered gamma rays observed by short spacing detectors and scattered gamma rays observed by long spacing detectors to determine corrected formation density values, and using the cased hole calibration relationships and scattered gamma ray measurements obtained by the long spacing detector and the short spacing detector to determine the formation density. An associated article of manufacture and computerized well logging system are also described.

The invention relates to a neutron logger for measuring stratigraphic porosity in borehole, and its technical solution mainly comprises top joint, casing, power supply framework, thermos flask, neutron detector (He 3 tube), signal processing circuit framework, screening body, neutron source house, and bottom joint, as well as pulse signal processing circuit, communication control and data transmission circuit, and power supply circuit, and it is characterized in that: the neutron detector is composed of two neutron detectors on the same side of the neutron source, where the two neutron detectors are respectively called short spacing (SS) and long spacing (LS), according to their spacing from the neutron source. And the SS and LS neutron detectors, screening body, fixing devices and pulse signal processing circuit are arranged in a heat insulating device and the two neutron detectors are both coated with thermal conductivity protective layers. The invention has high detecting efficiency, higher error compensation and data processing accuracy, high integrity of signal processing circuit and power supply circuit, and strong stability, convenient to use and maintain.

The invention relates to edible fat powders having a full width at half maximum of the first order long spacing X-ray diffraction peak of 0.17 to 0.80 degrees and a free flowing density of 10 to 350 g/l; with the proviso that when the free flowing density is equal to or greater than C, the full width at half maximum is equal to or greater than ((A*free flowing density)+B), wherein A is 0.0005625, B is 0.213 degrees and C is 90 g/l. The invention further relates to a method of preparing a fat continuous spread comprising the use of such edible fat powder.

The invention discloses a method and instrument for controllable source neutron logging during drilling. The method comprises the steps that a pulse neutron source on a drill collar is started and quantitative high-energy neutrons are emitted to a stratum in a pulse mode; the number of thermal neutrons with the speed reduced by the stratum is measured through a long spacing detector and a short spacing detector which are arranged on the drill collar respectively, wherein the thermal neutrons are scattered back to a well hole; according to the number, measured through the two spacing detectors, of the thermal neutrons, the macroscopic capture cross section sigma of the thermal neutrons and the porosity phi of the stratum are obtained; the stratum water saturation Sw is obtained according to the macroscopic capture cross section of the thermal neutrons and the porosity phi. The instrument comprises the pulse neutron source, a detection unit, a signal processing and data analyzing unit and a power module used for supplying power for the detection unit and the signal processing and data analyzing unit. The thermal neutrons are detected through the long spacing <3>He thermal neutron detector and the short spacing <3>He thermal neutron detector, two sets of parameters including the porosity and the macroscopic capture cross section of the thermal neutrons and are obtained, and therefore the measurement of the water saturation and the porosity of the stratum with a relatively low degree of mineralization is achieved. Due to the use of the pulse neutron source, damage, caused by a radioactive source, to human and the environment is eliminated.

The invention discloses a method for setting inter-station unidirectional sectioned green wave signals for long-spacing buses. The method is specifically implemented for long-spacing bus stations containing a plurality of intersections among the stations, the inter-station intersections are grouped on the basis of unified signal periods and unified timing, signal phase differences of the intra-group intersections are set, signal phase differences of the inter-group intersections are coordinated with one another, and inter-station unidirectional sectioned green waves are set by means of adjusting departure moments of the buses. The method has the advantages that problems of fast rising demands on unidirectional buses and congestion caused by 'tidal traffic' are mainly relieved, fast and efficient running of the buses is guaranteed by means of setting the inter-station unidirectional sectioned green waves, the bus service level and the travel efficiency of passengers are improved simultaneously, attraction power of the buses is strengthened, and road congestion is relieved.

There are provided an intermolecular compound of (a) di-saturated medium chain fatty acids mono-saturated long chain fatty acid triglyceride and (b) 1,3-di-saturated long chain fatty acids 2-mono-unsaturated long chain fatty acid triglyceride, of which a long spacing value by X-ray diffraction is 65 Å or more, and foods containing the intermolecular compound. The intermolecular compound can be used as a part of fats and oils that constitute foods. Due to formation of the intermolecular compound, the fats and oils containing large amounts of symmetric triglycerides such as cocoa butter and those containing medium chain fatty acids do not form separate crystals and, therefore, can keep smooth texture and prevent blooming.

The invention discloses a pipeline leaking blocking and isolation repairing method. The method is carried out on the basis of a novel blocking device, wherein the blocking device mainly comprises two spiral driving units and two blocking repairing units, wherein one spiral driving unit and one blocking repairing unit form a blocking repairing system set; each blocking repairing unit comprises a supporting frame, a blocking air bag, a repairing air bag and a metal coating layer; and the spiral driving units comprise front driving systems, outer rotor motors and rear supporting systems. In case of leaking accident of a pipeline, three conditions, including a single-point leaking condition, a short-spacing multi-point area leaking condition and a multi-point long-spacing dispersing section leaking condition based on the pipeline leaking condition. According to the method, the blocking repairing units are dragged into a leaking area through the spiral driving units; and the pipeline leakage is subjected to emergency treatment by blocking and isolation mending repairing and blocking and isolation replacing repairing based on the leaking condition.

The invention relates to a boring device for multiple sets of long-spacing coaxial holes. The boring device for multiple sets of long-spacing coaxial holes comprises a three-phase asynchronous motor, a cycloidal-pin wheel speed reducer, a movable carriage, a fixed carriage, a T-shaped screw rod, a T-shaped copper nut, an axial thrust bearing, a longitudinal movable adjusting nut, a boring rod fixing base A, a boring rod fixing base B, a thrust bearing ,a small gear, a large gear, a radial bearing, a boring rod, a boring machine fixing rod and the like. The boring device fixing rod is pressed on a tool rest on any side of a double housing planer, the tool rest can move horizontally and vertically, the moving distance is accurately determined through a dial indicator, and the boring coaxiality is high; coaxiality and roundness tolerance of holes can meet design requirements; and the boring device is suitable for machining holes with various types of spacing and with the high requirement for coaxiality.

It is assumed that there are a plurality of areas where a transfer is to be performed at a long pitch, in an original film, and a plurality of areas where a transfer is to be performed at a short pitch in each of the areas where a transfer is to be performed at a long pitch. On a sub-scan stage the original document is sub-scanned in the area where a transfer is to be performed at a short pitch, by performing at least one small step transferring, which is a transfer performed at a short pitch. Thereafter, a large step transferring which is a transfer performed at a long pitch, is performed on the sub-scan stage. The sub-scanning is repeated by performing the large step transferring and the small step transferring.

The invention relates to a long spacing reverberation time obtaining method, particularly relates to a mirror image source method based long spacing reverberation time obtaining method, and aims to solve the problem of big errors of existing methods for obtaining long spacing reverberation. The long spacing reverberation time obtaining method includes arranging a point acoustic source (m, n) and a receiving point at the position which is z from the mirror image acoustic source in long spacing with a geometric reflection boundary, and subsequently performing calculation according to acoustic energy and the distance between the point acoustic source (m, n) and the receiving point to finally obtain long spacing reverberation time. The mirror image source method based long spacing reverberation time obtaining method is applicable to obtaining long spacing acoustic reverberation time of subway stations, passages and the like.

A long-life hot cathode fluorescent lamp can include a pair of parallel lead wires that can be arranged at each end of a tube. A coiled filament can be connected at its opposite end portions to the lead wires. The coiled filament can have two long pitched regions in which a coil pitch is longer than regions outside of the long pitched regions. Emitter can be located in a region defined between the two long pitched regions. Shape characteristics and intensive current flow obtained by the presence of the long pitched regions can form the origins of discharge near the boundaries between long and short pitched regions. Accordingly, stable discharge can be achieved with the origins of discharge located at ends of the emitter. As a result, the hot cathode fluorescent lamp is allowed to have a long life and stable light emission characteristics.

The invention provides a coaxiality detector for a combined long-spaced shaft sleeve. The coaxiality detector comprises sliding end shafts, a reference rod and detection sliding sleeves, wherein two sliding end shafts are provided; the sliding end shafts comprise chamfered fitting portions and sliding pin portions; the two ends of the reference rod are provided with end stepped holes; two detection sliding sleeves are provided; the detection sliding sleeves have tubular structures provided with through holes; the through holes are sliding sleeve sliding holes; the sliding sleeve sliding holes are in clearance fit with the sliding pin portions of the sliding end shafts; the difference between the inner diameter of the shaft sleeve and the outer diameter of each detection sliding sleeve is smaller than a preset coaxiality standard value of the shaft sleeve. In the detector, the sliding end shafts and the reference rod are combined into a public axis, and inspection on whether the coaxiality between shaft sleeves at the two ends of a rear axle and the public axis meets a design standard or not is performed by detecting whether the sliding sleeves can be inserted into the gaps between the sliding pin portions of the sliding end shafts and the shaft sleeves. The coaxiality detector is skillful in design, and is rapid and convenient to operate and use.

The invention discloses acoustic wave detection equipment for detecting cementation quality of a cement protection layer of a gas storage well, and the acoustic wave detection equipment is used for detecting the cementation quality of the cement protection layer of an outer layer of the gas storage well. The acoustic wave detection equipment comprises a housing, a multi-core armor cable, a collarlocator fixed inside the housing, an electronic circuit structure, a transmitting sensor; a receiving sensor, and a ground control system, wherein the electronic circuit structure is fixed to a lowerpart of the collar locator and comprises a signal amplifier, a low pass filter, a transmission controller, a digital signal processor, a coupling transformer, an instrumentation amplifier, a band passfilter, an analog-to-digital converter and a high-speed remote transmission module; the receiving sensor comprises a short spacing receiving sensor and a long spacing receiving sensor fixed to the lower part of the transmitting sensor, the short spacing receiving sensor is 1.4 m away from the top of the housing, the long spacing receiving sensor is located at the bottom of the housing, and soundinsulating materials are filled between the transmitting sensor and the short spacing receiving sensor and between the short spacing receiving sensor and the long spacing receiving sensor.

The invention relates to a long-spacing signal processing thick film circuit. Most of long-spacing signal processing circuits used at present comprise discrete components, and when a set of components are damaged, the maintenance is always comparatively difficult. The long-spacing signal processing thick film circuit is a rectangular thick film block and comprises 20 acicular pins, which are arrayed in two rows at both sides of the thick film circuit, and a built-in long-spacing signal processing circuit, wherein a long-spacing signal input end is the pin 1 of a thick film; one end of a variable resistor R4 is grounded, and the other end of the variable resistor R4 is connected with the pin 20 of the thick film, together with a sliding end; one end of a variable resistor R9 is connected with the pin 4 of the thick film, together with the sliding end, and the other end of the variable resistor R9 is connected with a pin 10; the pins 14 and 19 of the thick film are connected with a +15V power supply; the pins 3 and 12 of the thick film are connected with a -15V power supply; and the pin 13 of the thick film is the OUT output end of a long spacing signal. The packaged thick film circuit disclosed by the invention has relatively low temperature drift, is easy to maintain and is more suitable for debugging the signal in the actual use.

The invention discloses an intelligent disc-loading seeder hole pressing device. The device comprises frame bodies, soil scraping plates, friction plates and pressing shaft assemblies. Two mounting holes are formed in the horizontal plane of each frame body, two oblique fixing slot holes are formed in the vertical surface of each frame body, the soil scraping plates are arranged in the fixing slotholes and comprise oblique surfaces, horizontal surfaces and fixing shafts, the fixing shafts are fixedly disposed on the two sides of the middle of each oblique surface, multiple circular holes areuniformly formed in the middle of each horizontal surface, and connecting holes are formed in the periphery of each horizontal surface; threaded bottom holes are formed in the centers of the front andrear portions of each horizontal surface respectively, the friction plates are arranged on the lower portions of the soil scraping plates, sliding columns are fixedly arranged in the threaded bottomholes and provided with pressing shaft devices and compression springs from bottom to top in sequence, the pressing shaft devices comprise pressing shafts, long spacing sleeves, hole pressing balls and short spacing sleeves, and the positions of the hole pressing balls correspond to those of the circular holes. The intelligent disc-loading seeder hole pressing device has the advantages of high versatility and a long service life.

The invention discloses a bean vermicelli drying device, and relates to a bean vermicelli drying device which comprises a box body, a heater, a fan, a mobile bean vermicelli placing trolley, a long spacing guide rail and a steam pipe, wherein the fan is installed on a support at the top of the box body; the long spacing guide rail is installed on the bottom surface of the box body; the heater is an electric heater, and is installed on the support in the box body; the support is also provided with a temperature controller. The bean vermicelli drying device provided by the invention has the advantages of scientific and reasonable structure, appropriate configuration of internal elements, uniformity in bean vermicelli drying, good quality and high efficiency.

The invention discloses an unloading belt pulley transmission mechanism used for a multi-line cutting machine. The unloading belt pulley transmission mechanism comprises a rack provided with a mandrel, wherein two bearings are arranged on the rack; a belt pulley is supported on the bearing; the bearings consist of a first bearing and a second bearing which are arranged at the two ends of the rack respectively; a long spacing sleeve is arranged between the first bearing and the second bearing; the axial end face of the first bearing is fastened by a gland; the axial end face of the second bearing is fastened by a shielding cover; the rack and the long spacing sleeve are respectively provided with a lubricating oil channel for lubricating the first bearing and the second bearing; the belt pulley is fixedly connected with the mandrel by a connecting plate; and the mandrel is fixedly connected with the connecting plate by a tension sleeve. The transmission mechanism has the advantages that the stability and the processing precision of the apparatus are enhanced, and meanwhile, the failure rate and the repairing difficulty of the apparatus are reduced.