JP2010160143A - Sampling apparatus and cooling apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sampling apparatus for collecting a two-phase fluid from a two-phase fluid transport pipe and extracting hot water, condensed water, and a noncondensable gas separately from each other, and a cooling apparatus for varying and handling cooling efficiency as part of the sampling apparatus. <P>SOLUTION: The sampling apparatus and the cooling apparatus includes: a sampling section provided with a sampling nozzle to be detachably attached to a mounting tube mounted to the circumferential side surface of the two-phase fluid transport pipe through which the two-phase fluid extracted from a steam well flows, and inserted into the two-phase fluid transport pipe through the mounting tube so as to vary a position of a sampling port; a separator for receiving a sample collected by the sampling nozzle and separating into a steam and the hot water; and the cooling apparatus for cooling the steam separated by the separator to produce the condensed water and the noncondensable gas. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sampling device and a cooling device. More specifically, a two-phase fluid that is a mixture of steam and hot water is directly collected from a transport pipe through which the two-phase fluid flows to cool the hot water and steam. Sampling device capable of separating and taking out condensed water (hereinafter referred to as condensed water) and non-condensable gas obtained, and cooling efficiency can be varied and handled as part of the sampling device. It is related with the cooling device which can be performed.

  As described in Non-Patent Document 1, the mechanism of geothermal power generation is as follows. There is a magma chamber around 1000 ° C. in a relatively shallow place with a depth of several kilometers, and a geothermal reservoir is naturally formed by heating rainwater or the like that has penetrated into the ground. A steam well is driven into the geothermal reservoir, and a two-phase fluid transport pipe is coupled to the steam well. The two-phase fluid is introduced into the steam separator through the steam well and the two-phase fluid transport pipe. In the steam separator, the two-phase fluid is separated into steam and hot water. The separated steam is introduced into the power generation turbine through a steam pipe. The power generation turbine is rotated by the steam introduced into the power generation turbine, and the rotor in the generator is rotated by the rotational force of the power generation turbine, whereby electric power is taken out from the generator. On the other hand, the hot water in the steam separator is sent to the reduction well through the reduction hot water pipe and returned to the ground deeply through the reduction well.

  The two-phase fluid flowing through the two-phase fluid transport pipe is a mixture of steam and hot water. The two-phase fluid exhibits various flow patterns depending on the conditions in the two-phase fluid transport pipe. In the two-phase fluid transport pipe arranged in the horizontal direction, the two-phase fluid exhibits a flow pattern called a gas-phase flow, a plug-like flow, a laminar flow, a wave-like flow, a slag flow, an annular flow, or a spray flow. Moreover, in the two-phase fluid transport pipe arranged in the vertical direction, the two-phase fluid exhibits a flow pattern called a bubble flow, a slag flow, a floss flow, an annular spray flow, a spray flow, or the like. The two-phase fluid is a mixture of steam and hot water, a steam-rich phase that contains many steam bubbles in the hot water, and relatively few steam bubbles in the hot water. It may also contain a hot water rich phase. As described above, the flow rate of the two-phase fluid flowing through the two-phase fluid transport pipe, the mixing ratio and the mixing state of steam and hot water vary from one steam well to another. In addition, the distribution of fluid flowing through the two-phase fluid transport pipe is not uniform.

  On the other hand, in geothermal power generation, component analysis of steam, hot water and non-condensable gas in a two-phase fluid is necessary for the maintenance and stable operation of the entire geothermal power generation facility, including steam wells. .

  The conventional method of collecting hot water, condensed water and non-condensable gas, or a mixture thereof from a two-phase fluid, which has been performed in the field so far, is generally as follows.

  The junction between the steam well and the two-phase fluid transport pipe, which is the main system, is connected to a branch pipe that releases the two-phase fluid to the atmosphere. A separator / silencer and hot water are connected downstream of the branch pipe. A weir is provided. When the system is excluded from the main system and released into the atmosphere, the two-phase fluid also flows to the branch pipe side. In the separator / silencer, the hot water and steam in the two-phase fluid are separated, and the hot water is heated. Stored in a water weir.

  In the conventional method, while discharging the two-phase fluid to the atmosphere, hot water is separately collected from the hot water weir, and condensed water and non-condensable gas are separately collected from the sampling tube attached to the branch pipe. The direction of the sampling tube for collecting condensed water and non-condensable gas is perpendicular to the central axis of the horizontally arranged branch pipe so that the tip thereof is placed at a predetermined position inside the branch pipe. However, it is mounted so as to be inserted into the branch pipe from the horizontal direction. Since this sampling tube is not movable and its position is fixed, it is mounted with the aim of a vapor rich phase in the branch tube. This sampling tube is coupled to a sampling separator via a water conduit. The two-phase fluid collected from the sampling tube flows through the water conduit and reaches the separator. In the separator, hot water is stored in the lower part of the cyclone by a cyclone method, and the steam stored in the upper part of the hot water in the separator is transferred from the separator to a sample-collecting cooler through a pipe. In the cooler, the steam flowing through the flow pipe is cooled with cooling water and taken out as a mixture of condensed water and non-condensable gas.

  An appropriate amount of hot water stored in the hot water weir is collected, and component analysis of the collected hot water is performed. The mixture of condensed water and non-condensable gas separated by the cooler is further separated into condensed water and non-condensable gas by an appropriate gas-liquid separator, and component analysis of condensed water is performed.

  Such a method has the following problems.

  In order to ensure the safety of geothermal power generation equipment and ensure stable operation, when collecting samples from two-phase fluids, perform an exclusion operation from the main system to the atmospheric release system for each steam well, and The part was released into the atmosphere. Therefore, a system exclusion operation from the main system to the open air system is necessary at the time of sampling, and sampling cannot be arbitrarily performed. Since part of the geothermal fluid is released from the open air system, the output of power generation is reduced. Since sampling must be performed after removing the pollutants in the system exclusion operation and the open air system, rapid sampling cannot be performed.

  When the two-phase fluid in the branch pipe is collected through the sampling pipe, the two-phase fluid transport pipe and the steam well are in a circulation state and the steam well and the branch pipe are closed in the coupling portion. Somehow, the steam well and the branch pipe must be in circulation. If it does so, the operator on the geothermal power station equipment side and the operator who performs a component analysis will have to get close communication.

  When the steam well and the branch pipe are put in a circulation state, during this period, a part of the amount of steam pumped from the steam well is not used for geothermal power generation, resulting in energy loss.

  Hot water weirs become dirty and corrode over time. Therefore, they may be mixed as impurities in the hot water stored. If it does so, the objective of performing the component analysis of hot water correctly will be impaired. In order to accurately perform the hot water analysis, it is necessary to circulate a sufficient amount of hot water to purify the hot water weir and to replace the hot water in the hot water weir. Therefore, it takes a lot of time.

  Usually, the place where hot water is collected is separated from the place where steam and non-condensable gas are collected, and operation personnel must be arranged at each place, which is complicated.

  Therefore, at present, a method for analyzing a two-phase fluid that eliminates the above-described problems is desired. For that purpose, first, development of a sampling device that can easily and accurately sample a two-phase fluid is desired. .

“Kyushu Electric Power's Geothermal Power Plant”, Kyushu Electric Power, March 10, 2003, pages 3-4

  The present invention solves the above-mentioned problems of the prior art, and can quickly collect the two-phase fluid pumped from the steam well at an arbitrary time. It is possible to install the two-phase fluid in hot water, condensed water and non-condensed without causing a significant delay in the time until the component analysis of An object of the present invention is to provide a sampling device that can be efficiently separated into a mixture of sex gases and that is easy to handle, and a cooling device that can cool steam efficiently.

Means for solving the problems are as follows:
(1) A sampling device for collecting a sample from a two-phase fluid transport pipe through which a two-phase fluid taken out from a steam well of a geothermal power plant flows,
It is detachably mounted on a mounting pipe attached to the peripheral side surface of the two-phase fluid transport pipe, and the position of the sampling port can be changed in the two-phase fluid transport pipe by inserting the mounting pipe. A sampling unit having a sampling nozzle to be inserted, a separator that receives a sample collected by the sampling nozzle and separates it into steam and hot water, and cools the vapor separated by the separator A sampling device, characterized by comprising a cooling device for condensate and non-condensable gas,
(2) the two-phase fluid transport pipe is disposed in a horizontal direction; and
The mounting position of the mounting pipe attached to the two-phase fluid transport pipe is the sampling device according to (1), wherein the sampling nozzle is a part that can be inserted from above or below the two-phase fluid transport pipe. Yes,
(3) The sampling nozzle is provided with a sampling port including one or more small-diameter holes on a peripheral side surface in the vicinity of the tip of the sampling nozzle and facing the flow direction of the two-phase fluid. 1) or the sampling device according to (2),
(4) The cooling device includes a cooling water tank for storing cooling water;
A fluid circulation pipe disposed in the cooling water tank while circulating the steam separated by the separator;
The sampling device according to any one of (1) to (3), further comprising a water level varying unit that varies a water level of cooling water that immerses the fluid circulation pipe in a cooling water tank,
(5) A cooling water tank for storing cooling water and a cooling water tank that is disposed in the cooling water tank and includes an upper opening, and the upper end of the upper opening is relatively vertically variable in the cooling water tank. A cooling device comprising: a water discharge tank; and a fluid circulation pipe disposed in the cooling water tank for circulating a fluid to be cooled.
(6) The water level changing means is disposed in the cooling water tank, has an upper opening, and an upper end of the upper opening is formed so that the position of the upper opening is relatively variable up and down in the cooling water tank. The cooling device according to (5), wherein

  According to the present invention, since the sample collection part is detachable from the two-phase fluid transport pipe, it can be moved to a place where maintenance can be performed when the sample is not collected. Therefore, it is possible to provide a sampling device that can be easily maintained.

  According to the present invention, the sample collection part attached to the attachment pipe attached to the two-phase fluid transport pipe has the sample collection nozzle capable of changing the position of the sample collection port. It is possible to sample hot water, condensed water, and non-condensable gas by selecting a position. Therefore, for example, when the two-phase fluid in the cross section perpendicular to the central axis in the longitudinal direction of the two-phase fluid transport pipe has a vapor-rich phase and a hot water-rich phase, the tip position of the sampling nozzle is set to the two-phase fluid. By sampling to a desired position in the transport pipe, selectively collect condensed water and non-condensable gas in the vapor-rich phase and hot water in the hot water-rich phase as a sample with a single sampling nozzle. It is possible to provide a sampling device that can

  According to the present invention, since the two-phase fluid transport pipe is provided with a detachable sample collection section, a separator and a cooling device, it is possible to analyze components of hot water, condensed water and non-condensable gas at the time of sampling from the two-phase fluid transport pipe It is possible to provide a sample collection device capable of collecting various samples.

  According to the present invention, since the sample is not collected in the open air system, the system exclusion operation on the power plant side becomes unnecessary, and therefore, from the inside of the two-phase fluid transport pipe can be arbitrarily and quickly performed without affecting the main system. A sampling apparatus capable of sampling can be provided.

  According to this invention, since the hot water weir is not employed, there is no risk of contamination during sampling, and no system exclusion operation or purification operation of the hot water weir is necessary. It is possible to provide a sample collection device that can greatly shorten the collection time and can reduce the number of personnel involved in the collection operation.

  According to the present invention, when the two-phase fluid transport pipe is arranged in the horizontal direction, the attachment pipe can be attached to either the lower side or the upper position on the peripheral side surface of the two-phase fluid transport pipe, Therefore, it is possible to provide a sampling device capable of sampling regardless of the environment where the two-phase fluid transport pipe is installed.

  According to this invention, since the sampling port having one or more small-diameter holes has the sampling nozzle formed on the peripheral surface of the sampling nozzle facing the flow direction of the two-phase fluid, the two-phase fluid It is possible to provide a sampling device that can sample a sample without stagnation while minimizing the flow of the two-phase fluid flowing through the transport pipe.

  According to the present invention, since the cooling device having the water level changing means capable of changing the water level of the cooling water stored in the cooling water tank is provided, the liquid circulation pipe according to the temperature of the vapor separated by the separator The heat transfer area in contact with the cooling water can be varied. As a result, the amount of operation to be varied to cool the steam to the condensate at a predetermined temperature is clear, the response is fast, the temperature can be adjusted stably, and the flow rate of the cooling water and the adjustment of the water level can be used together. In addition, it is possible to provide a sampling device that can respond to a large temperature change of steam and cooling water, has a quick response, and can stably adjust the temperature.

  According to this invention, since the water level of the cooling water stored in the cooling water tank can be varied by the water level varying means, the heat transfer area of the fluid passage is varied according to the temperature of the fluid flowing through the fluid passage. be able to. Therefore, when the fluid to be cooled is cooled to the fluid of the predetermined temperature, the variable operation amount is clear, the response is fast, the temperature can be adjusted stably, and the flow rate and level of the cooling water can be adjusted. By using together, it is possible to provide a cooling device that can respond to a large temperature change of steam and cooling water, has a quick response, and can perform stable temperature adjustment.

  The cooling device according to the present invention can be used as a cooling device in the sampling device according to the present invention, and can also be used as a cooling device in a device configuration that requires cooling other than the sampling device. .

FIG. 1 is an explanatory diagram showing a sample collection device according to an embodiment of the present invention. FIG. 2 is an explanatory view showing a rotation driving device in the sample collection device according to the embodiment of the present invention. FIG. 3 is an explanatory view showing an example of a movable nozzle tube in the sample collection device according to the embodiment of the present invention. FIG. 3A shows one sample collection port opened on the peripheral surface of the distal end of the movable nozzle tube. FIG. 3B is an explanatory view showing a state in which a sampling port made up of a plurality of small-diameter holes opened in the peripheral surface of the tip of the movable nozzle tube is opened. is there.

  Hereinafter, embodiments of the sampling apparatus of the present invention will be described with reference to the drawings.

  The geothermal power generator has a two-phase fluid transport pipe coupled to one or more steam wells driven deep into the ground. Steam wells are also referred to as production wells or geothermal wells.

  FIG. 1 is an explanatory diagram showing a sample collection device according to an embodiment. As shown in FIG. 1, the sample collection device 3 includes a collection unit 4, a separator 5, and a cooling device 6.

  The sample collection unit 4 is detachably attached to a mounting pipe 7 attached to the peripheral side surface of the two-phase fluid transport pipe 2, and the sample sampling is inserted into the two-phase fluid transport pipe 2 through the mounting pipe 7. The movable nozzle tube 8 is inserted so that the position of the mouth 40 can be changed.

  In the normal case, the two-phase fluid transport pipe is disposed horizontally, but may be disposed obliquely or vertically depending on topography and other technical circumstances. In FIG. 1, the two-phase fluid transport pipe 2 is disposed horizontally.

  On the peripheral surface of the two-phase fluid transport pipe 2, an attachment pipe 7 for attaching the sampling part 4 is attached. The attachment pipe 7 is mounted at an arbitrary position in the two-phase fluid transport pipe 2 with one or two as required per two-phase fluid transport pipe. In geothermal power generation, one two-phase fluid transport pipe is connected to each of a plurality of steam wells, and the steam produced from the plurality of steam wells may be led to a power generation turbine. . Accordingly, when viewed from one geothermal power generation device, the number of two-phase fluid transport pipes equal to the number of steam wells is installed. Each of the plurality of two-phase fluid transport pipes is provided with one or a plurality of attachment pipes 7. Therefore, in the present invention, the two-phase fluid at a desired position can be sampled by appropriately determining the installation position of the attachment pipe in the two-phase fluid transport pipe. For example, examples of the attachment position of the attachment pipe in the two-phase fluid transport pipe include a position close to the steam well, a close position away from the steam well by a predetermined distance, and a far position further away from the steam well by a predetermined distance. it can.

  The attachment pipe may be attached at any position as long as it is a peripheral side surface of the two-phase fluid transport pipe. For example, in a two-phase fluid transport pipe disposed horizontally such that the center axis of the two-phase fluid transport pipe extends in the horizontal direction, the upper peripheral side surface in the vertical direction perpendicular to the center axis of the two-phase fluid transport pipe An attachment pipe may be attached to the lower side surface, and an attachment pipe may be attached to the lower peripheral side surface in the vertical direction perpendicular to the central axis of the two-phase fluid transport pipe. When the state of the two-phase fluid flowing in the two-phase fluid transport pipe arranged in the horizontal direction is observed in a cross section perpendicular to the central axis of the two-phase fluid transport pipe, the circular cross section of the two-phase fluid transport pipe When a two-phase fluid that is rich in hot water on the lower half side and rich in steam on the upper half side is circulating in the two-phase fluid transport pipe, it is placed on the lower or upper peripheral face of the two-phase fluid transport pipe. If the mounting pipe is installed, the hot water-rich two-phase fluid can be collected by setting the position of the sampling port in the movable nozzle pipe to the lower half side of the cross section of the two-phase fluid transport pipe. If the position of the sampling port is set on the upper half side of the cross section of the two-phase fluid transport pipe, a vapor-rich two-phase fluid can be sampled. Thus, if the attachment position of the attachment pipe in the two-phase fluid transport pipe is determined, the hot water-rich two-phase fluid and the vapor-rich two-phase fluid can be selectively sampled.

  The attachment of the attachment pipe to the two-phase fluid transport pipe is preferably set so that the center axis of the two-phase fluid transport pipe and the center axis of the attachment pipe are orthogonal. The following description relates to the case where the mounting pipe is attached to the two-phase fluid transport pipe so that the central axis of the mounting pipe is orthogonal to the central axis of the two-phase fluid transport pipe.

  The mounting pipe 7 is provided with, for example, two gate valves (not shown). When the sampling portion 4 is not attached to the attachment pipe 7, two groups of the attachment pipe 7 are prevented so that the two-phase fluid is not ejected from the inside of the two-phase fluid transport pipe 2 through the attachment pipe 7. The gate valve is closed. In the present invention, the valve mounted on the mounting tube 7 is not limited to the gate valve as long as the movable nozzle tube 8 that is a sampling nozzle is inserted into the mounting tube 7.

  The collection unit 4 includes a movable nozzle tube 8. The movable nozzle tube 8 is drawn out from the stored collection portion 4 and inserted into the two-phase fluid transport tube 2 when the collection portion 4 is attached to the mounting tube 7, and the movable nozzle tube 8 is The position of the sampling port 40 in the two-phase fluid transport pipe 2 can be adjusted. The movable nozzle tube 8 is an example of a sampling nozzle in the present invention.

  The sampling unit 4 including the movable nozzle tube 8 has a base 9, a column 10, a ball screw 11, a ball nut (not shown) and supports the movable nozzle tube 8 as shown in FIG. It has a nozzle tube support 12, a guide portion 12 </ b> A for guiding the straight movement of the movable nozzle tube 8, and a drive device that rotates the ball screw 11 (not shown).

  When the open / close valve in the mounting pipe 7 is opened, the movable nozzle pipe 8 can pass through the mounting pipe 7. When the movable nozzle tube 8 passes through the attachment tube 7 and the sampling port 40 is located in the two-phase fluid transport tube 2, the high-temperature two-phase fluid in the two-phase fluid transport tube 2 is attached to the attachment tube 7. 7 is filled, the connecting portion between the mounting tube 7 and the base 9 and the outer peripheral surface of the movable nozzle tube 8 that is in contact with other members, such as the sliding contact portion, fills the inside. It is necessary to have an airtight and pressure resistant structure so that the two-phase fluid does not jet out.

  A column 10 is provided on the base 9. The column 10 supports the ball screw 11. That is, the ball screw 11 is disposed in parallel with the support column 10, and has one end on the base 9 and the other end on the support body 14 projecting so as to be parallel to the base 9 at the tip of the support 10. Is supported rotatably.

  The ball screw 11 can be rotated by a driving device. As the drive device, various mechanisms can be adopted as long as the ball screw 11 can be rotated. For example, a stepping motor can be used as the motor. However, in the case where the sampling device 3 has a simpler and lighter structure, the driving device is preferably a manual rotating device. This manual rotation device may adopt any rotation drive mechanism as long as it rotates the axis orthogonal to the rotation axis of the ball screw 11 as long as the rotation motion is transmitted to the ball screw 11. A first bevel gear mounted near the end of the ball screw 11, a second bevel gear meshing with the first bevel gear and having an axis perpendicular to the axis of the first bevel gear, the second bevel gear A hand-rotating drive device including a rotating shaft having gears and an annular rotating wheel that rotates the rotating shaft can be given.

  The inner diameter of the two-phase fluid transport pipe to which this sampling device is attached varies depending on the scale of the steam well to which the two-phase fluid transport pipe is attached. Then, the distance that the tip of the movable nozzle tube inserted into one two-phase fluid transport pipe reaches the inner wall surface, and the tip of the movable nozzle tube inserted into another two-phase fluid transport pipe are This is different from the distance to reach the inner wall surface. Under such circumstances, the movable nozzle tube is further inserted into the two-phase fluid transport pipe by the driving device even though the tip of the movable nozzle tube reaches the inner wall of the two-phase fluid transport pipe. When a force to be applied is applied to the movable nozzle tube, the movable nozzle tube may be damaged. For the purpose of eliminating such a concern, it is preferable that the driving device (for example, a hand-rotating rotation driving device) includes an insertion load limiting device such as a torque limiter.

  Normally, the inside of the two-phase fluid transport pipe cannot be observed from the outside unless an observation window is provided. Therefore, when the tip of the movable nozzle tube is inserted into the two-phase fluid transport pipe, the moving distance of the movable nozzle tube, more specifically, the two-phase fluid transport pipe, so that the position of the tip can be confirmed. It is preferable that a moving distance meter indicating the moving distance of the movable nozzle tube moving along the central axis perpendicular to the central axis in the longitudinal direction is provided in the sample collection device. As an example of the movement distance meter, there is a memory carved on the surface of a support column 10 standing in parallel with the ball screw 11, and the rotation speed of the ball screw 11 is converted into a movement distance of the movable nozzle tube 8. For example, a digital travel distance meter that digitally displays the travel distance can be given.

  Further, the inside of the two-phase fluid transport pipe is in a high pressure state due to the two-phase fluid. Therefore, there is a risk that the movable nozzle tube inserted into the two-phase fluid transport pipe is pushed back out of the two-phase fluid transfer pipe due to the high pressure state. In order to avoid such a danger, it is preferable that the drive device (for example, a hand-driven rotation drive device) includes a ball screw reverse rotation prevention device.

  FIG. 2 is a schematic view showing a manual rotation drive device in the sample collection device 3. As shown in FIG. 2, the hand rotation drive device 30 is supported by the fixing member 31 and the fixing member 31 so as to be rotatable so as to be perpendicular to the fixing member 31, and to the ball screw 11. The coupled rotating shaft 32, the first bevel gear 33 provided at the tip of the rotating shaft 32, and the rotation supported by the fixed member 31 so as to be rotatable relative to the fixed member 31. A hand handle 34 attached to one end of the shaft, a second bevel gear 35 coupled to the tip of the rotating shaft and meshing with the first bevel gear 33, and the hand handle 34 and the second bevel gear 35. A torque limiter 36 attached to the rotary shaft at one end, a rotation stop ring 37 penetrating through the rotary shaft to which the second bevel gear 35 is attached and having a rack-like shape in the ratchet mechanism, and And a fitting through which can be the stopper 38 around the retaining ring 37.

  When such a manual rotation drive device 30 is provided in the sample collection unit 3, the ball screw 11 is rotated by rotating the manual handle 34, and the tip of the movable nozzle tube 8 causes the attachment tube 7 to be rotated by this rotation. Insertion and further advance in the direction perpendicular to the central axis in the two-phase fluid transport pipe 2, that is, in the diameter direction, and finally the tip of the movable nozzle pipe 8 reaches the inner wall of the two-phase fluid transport pipe 2. become. In an ordinary case, the operator who operates the handwheel 34 can feel that the tip is in contact with the inner wall by touching the handle 34 when the handwheel 34 is rotated. The rotation operation can be stopped. However, if for some reason, for example, an operation by an unskilled operator, the handwheel 34 continues to rotate despite the fact that the tip portion is in contact with the inner wall, an insertion load limiting device (for example, a torque limiter 36) As a result, the handwheel 34 is idled, and the free end prevents the tip of the movable nozzle tube 8 from moving forward any further. As a result, the movable nozzle tube 8 having a tip portion that abuts against the inner wall of the two-phase fluid transport tube 2 does not further advance, and the movable nozzle tube 8 is prevented from being damaged.

  Further, when the movable nozzle tube 8 is advanced by rotating the handwheel 34, the tip of the movable nozzle tube 8 should be arranged at an arbitrary position in the diametrical direction in the cross section perpendicular to the central axis of the two-phase fluid transport tube 2. In this case, the two-phase fluid transport pipe is used even though the inside cannot be observed by observing the moving distance meter (for example, a scale) or by observing the value of the display unit in the moving distance meter. The tip of the movable nozzle tube 8 can be accurately positioned at a predetermined position in 2.

  When the tip of the movable nozzle tube 8 is disposed at a predetermined position in the two-phase fluid transport pipe 2, the stopper 38 is inserted into the rotation prevention ring 37, so that the pressure in the two-phase fluid transport pipe 2 is increased. It is safe because the ball screw 11 is prevented from rotating in the reverse direction.

  On the other hand, as shown in FIGS. 3 (a) and 3 (b), the movable nozzle tube 8 is a hollow tubular body, and a sample collection port 40 is opened at the tip thereof. The sampling port 40 is a peripheral side surface of the distal end portion of the movable nozzle tube 8 and is drilled in one portion of the two-phase fluid transport tube 2 that faces the direction in which the two-phase fluid flows. The sampling port 40 may be formed with one opening as shown in FIG. 3 (a), and a plurality of small-diameter holes 40A are gathered as shown in FIG. 3 (b). May be formed in one region. When the sample collection port 40 is opened so as to face the flow direction of the two-phase fluid, the two-phase fluid can be collected while minimizing the disturbance of the flow state of the two-phase fluid.

  A lead-out tube 15 is attached to the end of the movable nozzle tube 8 opposite to the sampling port, that is, the end of the movable nozzle tube 8 opposite to the end inserted into the two-phase fluid transport tube 2. ing.

  An open / close valve 15 </ b> A is interposed in the outlet pipe 15. When the opening / closing valve 15A is closed and the opening / closing valve 15A is opened when necessary, the two-phase fluid collected in the movable nozzle tube 8 is led to the separator 5.

  In addition, this collection part 4 can improve the convenience of movement by being mounted in the frame which has wheels, such as a caster.

  The separator 5 can employ various structures as long as the introduced two-phase fluid can be separated into hot water and steam. The general separator 5 has a structure that performs air-water separation by a cyclone method. Such a separator 5 has a housing 16 in which the internal space is formed in a cylindrical shape, and a two-phase fluid introduction for introducing a two-phase fluid from a circular tangential direction that is a cross section in a direction orthogonal to the axis of the housing 16. Part 17. The two-phase fluid introduction part 17 is connected to the outlet pipe 15. The two-phase fluid introduced into the housing 16 from the two-phase fluid introduction portion 17 connected to the outlet pipe 15 rises while turning in the housing 16 and is separated in the course of the turning-up movement. Hot water is stored in the lower part of the casing 16 in the separator 5, and the separated hot water is led out of the casing 16 from a discharge pipe 18 provided at the bottom of the casing 16, while steam is transferred to the transfer pipe. 19 is transferred to the cooling device 6.

  The separator 5 is provided with various incidental facilities for improving the safety and knowing the inner state of the housing 16. As ancillary equipment, for example, as shown in FIG. 1, a liquid level gauge indicated by 20A, a safety valve indicated by 20B, which automatically opens when the internal pressure of the housing 16 exceeds a certain value. And a pressure gauge indicated by 20C.

  The separator 5 may be mounted on a frame on which the sampling unit 4 is mounted, or may be installed at a location different from the frame on which the sampling unit 4 is mounted. In many cases, in order to easily move the sampling unit 4, the vehicle is different from the frame on which the sampling unit 4 is mounted, for example, a vehicle (for example, a truck bed), a hand-held type moving body (for example, a manual pressing unit). It is preferable to install the separator 5 on a carriage or a self-propelled moving body (for example, a self-propelled moving body that rotates a wheel by driving an engine).

  The cooling device 6 includes a cooling water tank, a fluid circulation pipe disposed in the cooling water tank, and a water level changing means capable of changing the water level of the cooling water with respect to the fluid circulation pipe, and the steam separated by the separator 5 is removed. As long as a mixture of condensed water and non-condensable gas can be obtained, various apparatus configurations can be adopted. For example, the cooling device is provided in a cooling water tank for storing cooling water and the cooling water tank, and has an upper opening, and the upper end of the upper opening is formed so as to be relatively vertically variable in the cooling water tank. In addition, a cooling device including a cooling water discharge tank and a fluid circulation pipe disposed in the cooling water tank for circulating the steam separated by the separator can be used. In addition, the cooling water discharge tank in this structure is an example of the water level variable means in this invention. The cooling device having the above-described configuration can be suitably incorporated in the sampling device according to the present invention, but it can also be used as a cooling device that cools a fluid to be cooled other than the vapor separated by the separator. Can be used.

  A cooling device 6 shown in FIG. 1 includes a cooling water tank 21 that stores cooling water, a cooling water discharge tank 23 that is disposed in the cooling water tank 21, includes an upper opening 22, and is formed to be vertically movable. And a fluid circulation pipe 24 that is disposed in the cooling water tank 21 and through which the steam supplied from the separator 5 circulates.

  The cooling water tank 21 is a housing having, for example, a cylindrical inner shape, and the housing shown in FIG. 1 is formed into a bottomed cylindrical body that opens upward. An insertion hole 25 is formed in the bottom of the cooling water tank 21 for liquid-tightly inserting a discharge pipe 28 that guides the vertical movement of a cooling water discharge tank 23 described later. A cooling water introduction part 27 for introducing cooling water stored in the cooling water tank 21 is provided on a peripheral side surface in the vicinity of the bottom of the cooling water tank 21. Cooling water is introduced into the cooling water tank 21 from the outside through the cooling water introduction unit 27.

  The entirety of the cooling water discharge tank 23 is disposed in the cooling water tank 21 so as to be movable up and down, and is formed in a bottomed cylindrical body that opens part or all of the upper part. Since the cooling water discharge tank 23 is connected to the bottom of a discharge pipe 28 that is liquid-tightly inserted into the insertion hole 25, the cooling water flowing into the cooling water discharge tank 23 is discharged from the discharge pipe 28. Through the cooling discharge tank 23. The cooling water discharge tank 23 can be moved up and down by a vertical movement device 29 disposed above the cooling water discharge tank 23.

  On the inner bottom surface of the cooling water tank 21, a cylindrical partition wall 26 is formed at a portion that is outside the region where the cooling water discharge tank 23 moves up and down. The cooling water tank 21 moves up and down in the internal space of the cylindrical partition wall 26.

  The fluid circulation pipe 24 can employ various structures as long as the supplied steam can be cooled by cooling water to form a mixture of condensed water and non-condensable gas. The fluid circulation pipe 24 shown in FIG. 1 is a spiral pipe formed in a spiral shape so as to be outside the cylindrical partition wall 26. The upper end of the serpentine tube is coupled to the transfer pipe 19, and the lower end of the serpentine tube extends outside the cooling water tank 21. When this cylindrical partition wall 26 is formed, the cooling water supplied from the cooling water introducing portion 27 is in a space formed by the outer peripheral surface of the cylindrical partition wall 26 and the peripheral surface without the cooling water tank 21. The fluid flow pipe 24 guided and disposed in the annular space is efficiently cooled.

  The sampling apparatus having the configuration described above is used as follows.

  As a premise for explanation, the mounting pipe 7 is provided in the two-phase fluid transport pipe 2.

  The base 9 of the sampling part 3 is attached to the mounting pipe 7. The open / close valve in the attachment pipe 7 is opened. When the ball screw 11 is rotated by manually driving a driving device (not shown), the movable nozzle tube 8 is lowered. The movable nozzle tube 8 that descends is inserted into the two-phase fluid transport tube 2 through the attachment tube 7 at the tip. When the sampling port of the movable nozzle tube 8 reaches a desired position, the lowering of the movable nozzle tube 8 is stopped.

  In the case where the two-phase fluid transport pipe 2 is disposed horizontally or obliquely while maintaining a gentle inclination, the cross section perpendicular to the axis of the two-phase fluid transport pipe 2 is lower in the cross section. Then, hot water exists, and steam may exist above the hot water. When collecting hot water, it is preferable to move the movable nozzle tube 8 so that the sample collection port 40 of the movable nozzle tube 8 is located in a region where the hot water exists. Further, when collecting the vapor, it is preferable to move the movable nozzle tube 8 so that the sample collection port 40 of the movable nozzle tube 8 is located in a region where the vapor exists. As described above, the sample collection device 3 can sample a sample at an arbitrary site in the two-phase fluid transport pipe by adjusting the insertion position of the movable nozzle pipe 8.

  The sample of the two-phase fluid collected in this way is accommodated in the movable nozzle tube 8, moves in the movable nozzle tube 8, and is sent out to the outlet tube 15.

  The sample of the two-phase fluid sent to the outlet pipe 15 is sent to the separator 5. In the casing 16 in the separator 5, it is separated into hot water and steam by a cyclone method. The hot water separated in the housing 16 is taken out from the discharge pipe 18. The extracted hot water is used for component analysis. However, the hot water may simply be discarded.

  The steam is sent to the cooling device 6 through the transfer pipe 19. The steam passes through the fluid flow pipe 24 which is a serpentine pipe.

  At this time, when the temperature of the steam is high or the temperature of the cooling water is high, the cooling water discharge tank 23 is arranged so that the upper opening in the cooling water discharge tank 23 is at the highest position. In order to move the cooling water discharge tank 23 to the highest position in the cooling water tank 21, the vertical movement device 29 is driven. When the cooling water discharge tank 23 is at the highest position, the cooling water introduced from the lower part of the cooling water tank 21 overflows into the cooling water discharge tank 23 from the upper opening of the cooling water discharge tank 23 in the cooling water tank 21. To do. Accordingly, the liquid level position of the cooling water stored in the cooling water tank 21, that is, the water level is always the same as the position of the upper opening of the cooling water discharge tank 23.

  On the other hand, when the temperature of the steam is low or the temperature of the cooling water is low, a large amount of cooling water is not required to cool the steam. When cooling with cooling water having such a low temperature, the cooling water discharge tank 23 is lowered by driving the vertical movement device 29 so that the upper opening of the cooling water discharge tank 23 is lowered from the highest position. Then, the cooling water discharge tank 23 is moved to a predetermined position. Then, the position of the upper opening of the cooling water discharge tank 23 becomes the liquid level position. As a result, the surface area of the portion of the fluid circulation pipe 24 immersed in the cooling water is reduced, and the steam can be cooled from the temperature to a predetermined temperature.

  In this way, by moving the cooling water discharge tank 23 up and down, the amount of operation to be varied to cool the steam to the condensed water at a predetermined temperature is clear, the response is fast, and stable temperature adjustment is possible. By using both cooling water flow rate and water level adjustment, it is possible to follow a large temperature change of steam and cooling water, and to respond quickly and stably.

  The steam cooled while passing through the fluid circulation pipe 24 is discharged as a mixture of condensed water and non-condensable gas. The mixture is further separated into condensed water by removing non-condensable gas by an air / water separator (not shown). The condensed water is subjected to component analysis.

  As described above, the present invention has been described in detail based on the embodiments of the invention. However, the present invention is not limited to the above contents, and various modifications and changes can be made without departing from the scope of the present invention. . For example, in order to adjust the water level in the cooling water tank 21, the cooling water discharge tank 23 that can be raised and lowered is adopted, but the cooling water discharge tank 23 may be fixed and the cooling water tank 21 itself may be configured to be movable up and down. Good. As a modification of the water level varying means, for example, a discharge pipe having a discharge port for discharging cooling water is formed of a flexible material in the cooling water tank, and the discharge port is moved up and down in the cooling water storage tank. Mention may be made of devices that can.

  Further, the fluid circulation pipe 24 shown in FIG. 1 is a snake pipe surrounding the cooling water discharge tank 23, but various modes can be adopted as long as it is arranged in the cooling water tank 21, for example, the cooling water tank The snake tube bent in a zigzag manner along the wall surface 21 may be used.

DESCRIPTION OF SYMBOLS 1 Steam well 2 Two-phase fluid transport pipe 3 Sampling apparatus 4 Sampling part 5 Separator 6 Cooling apparatus 7 Mounting pipe 8 Movable nozzle pipe 9 Base 10 Strut 11 Ball screw 12 Nozzle pipe support body 12A Guide part 14 Support body 15 Derivation pipe 15A On-off valve 16 Housing 17 Two-phase fluid introduction part 18 Discharge pipe 19 Transfer pipe 20A Liquid level gauge 20B Safety valve 20C Pressure gauge 21 Cooling water tank 22 Upper opening 23 Cooling water discharge tank 24 Fluid flow pipe 25 Insertion hole 26 Cylindrical shape Partition wall 27 Cooling water introduction part 28 Support body 29 Vertical movement device 30 Hand rotation drive device 31 Fixing member 32 Rotating shaft 33 First bevel gear 34 Hand handle 35 Second bevel gear 36 Torque limiter 37 Non-rotating ring 38 Stopper 40 Sample sampling port 40A small bore

Claims (6)

A sampling device for collecting a sample from a two-phase fluid transport pipe through which a two-phase fluid taken out from a steam well of a geothermal power plant flows,
Removably attached to a mounting pipe attached to the peripheral side surface of the two-phase fluid transport pipe,
A sampling unit having a sampling nozzle to be inserted and sampled by the sampling nozzle so that the position of the sampling port can be changed in the two-phase fluid transport pipe through the mounting pipe. Sampling comprising: a separator that receives a sample and separates it into steam and hot water; and a cooling device that cools the steam separated by the separator into condensed water and non-condensable gas. apparatus.   The two-phase fluid transport pipe is arranged in a horizontal direction, and the mounting position of the mounting pipe attached to the two-phase fluid transport pipe is such that the sampling nozzle can be inserted from above or below the two-phase fluid transport pipe. The sampling device according to claim 1, wherein the sampling device is a portion consisting of: The sample sampling nozzle is provided with a sample sampling port comprising one or more small-diameter holes on a peripheral side surface in the vicinity of the tip thereof and facing a flow direction of the two-phase fluid.
Or the sampling apparatus according to 2. The cooling device includes a cooling water tank for storing cooling water,
The steam separated by the separator is circulated, and a fluid circulation pipe disposed in the cooling water tank, and a water level varying means for varying the water level of the cooling water in which the fluid circulation pipe is immersed in the cooling water tank. The sampling device according to any one of claims 1 to 3.   A cooling water tank that stores cooling water, a fluid circulation pipe that circulates the fluid to be cooled and that is disposed in the cooling water tank, and a variable water level that varies the water level of the cooling water that immerses the fluid circulation pipe in the cooling water tank. And a cooling device. The water level changing means is a cooling water discharge tank that is disposed in the cooling water tank, includes an upper opening, and an upper end of the upper opening is formed to be relatively variable in the vertical position in the cooling water tank. The cooling device according to claim 5.

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