RU2799268C1 - Valve throttle compartment closing method - Google Patents

Abstract

FIELD: oil and gas industry.

SUBSTANCE: maintenance of systems for controlling the flow of gaseous and liquid products. Invention relates to throttle valves and can be used at enterprises that manufacture throttle valves and in their places of operation, for closing the compartments of the throttle valve body with the resistance of the spring block protruding relative to the first thread of the seat. A clamping device is installed on the pipeline near the throttle valve, which presses the plug against the first thread of the seat located in the compartment of the valve-throttle body, with a force that overcomes the resistance of the spring unit located in the aforementioned compartment of the valve-throttle body, until pressing the first thread of the plug to the first thread of the aforementioned seat, after which the plug is screwed into the aforementioned compartment of the valve-throttle body by means of an installation tool.

EFFECT: closing of the throttle valve compartment under the action of the spring block on the plug, ensuring the coaxiality of the plug relative to the valve-throttle body compartment, ensuring the safety of the threads of the plug, ensuring the safety of the threads of the seat in the compartment of the valve-throttle body.

10 cl, 7 dwg

Description

The invention relates to the field of maintenance of control systems for the flow of gaseous and liquid products, namely, throttle valves, and can be used at enterprises manufacturing throttle valves and in their places of operation, to close the compartments of the throttle valve housing.

Throttle valves are known from the prior art (patents No. RU2241249C2, published on 11/27/2004; No. RU2152068C1, published on 06/27/2000; No. RU2114457C1, published on 06/27/1998; 95;https://web .archive.org/web/20130523063352/http://ecogazenergo.ru/, date of information caching according to the site http://web.archive.org/ – 23.05.2013) containing a housing, inlet and outlet pipes made with the possibility of connecting, respectively, with the inlet and outlet pipelines, a partition dividing the volume inside the valve-throttle body into the inlet and outlet, while at the inlet there are compartments with on-off piston-type shut-off valves; in the closed (initial) state, the pistons of the spring-loaded shut-off valves close the holes in the consumable washers mounted in the baffle. In the closed (initial) state, in the absence of pressure in the inlet pipeline and compartments with shut-off valves, the pistons of all shut-off valves are in the extreme position at the wear washers due to the presence of plugs in each compartment, which form a compression of the spring block, which creates a force to close the shut-off valve.

In the above-mentioned sources, throttle valves are referred to as follows: “multi-flow discrete throttle valve”, “multi-flow throttle valve”, “discrete throttle valve with an impulse control system”, “discrete shut-off and control device”. Hereinafter, the term "throttle valve" will be used in the text.

It will be apparent to the gaseous and liquid flow control system maintainer that throttling valves are not limited to the throttling valves from the aforementioned sources of information. In the claimed invention “method of closing the throttle valve compartment”, legal protection extends to the method of closing the compartments of such throttle valves, the plugs of which form a compression of the spring block, which creates a force to move the stop valve piston, closing the hole in the partition between the inlet and outlet of the throttle valve.

Hereinafter, the term "working medium" will be used to generalize the terms "gaseous product", "liquid product", "gas", "liquid", unless otherwise expressly indicated.

In the above-mentioned throttle valves (patents No. RU2241249C2, published on 11/27/2004; No. RU2152068C1, published on 06/27/2000; No. RU2114457C1, published on 06/27/1998; 95;https://web.archive .org/web/20130523063352/http://ecogazenergo.ru/, date of information caching according to the website http://web.archive.org/ – 23.05.2013) a multi-threaded flow scheme of the working environment and a pulse method for controlling the flows of the working environment are implemented , at which the change in the flow area of the openings of the consumable washers in the partition separating the valve-throttle body into the inlet and outlet occurs when an electrical impulse is applied. The fluid is used to move on/off shutoff valves from one position to another (i.e. from open to closed or vice versa). The working medium is briefly taken from the inlet of the throttle valve to transfer the two-position shut-off valves to the “closed” position, and to transfer them to the “open” position, the working medium is disposed of at the outlet of the throttle valve or into a candle (into a candle - if the working medium is a gaseous product ). The value of the flow area of the openings of the consumable washers in the baffle is regulated by transferring the required number of shut-off valves to the "open" position.

From the prior art (operating manual for a multifunctional gas flow control system based on a discrete throttle valve (DKD), flow / pressure regulator DKD - 100,150,200,300,400,500. - "DKD 10.00.03 TO and IE". - 36 pages - 2011 - Moscow . - firm "EcoGazEnergo" https://web.archive.org/web/20160828004445/http://ecogazenergo.ru/files/DKD-47-111-2011.pdf, date of caching information according to the site http:/ /web.archive.org/ - 08/28/2016) it is known that during long-term operation of the throttle valve, once every 2 years, the tightness of the mechanical seals of the pistons of the shut-off valves of the throttle valve is checked, and if the results are unsatisfactory, the shut-off valves are completely disassembled with the replacement of damaged parts .

From the prior art (instruction for repair and maintenance of multifunctional gas flow control systems based on a discrete throttle valve (DKD). - 8 pages - Moscow. - EcoGazEnergo. https://web.archive.org/web/ It is known that during operation of the throttle valve, individual malfunctions may occur.

Such a malfunction may occur as the passage of the working medium into the outlet pipeline when the shut-off valves are closed (probable causes of the malfunction: 1. dirt on the surface of the sealing pair of the shut-off valve (for example, with an increased content of mechanical and other impurities in the working medium); 2. damage to the surface of the sealing pair of the shutoff valve; 3. jamming of the shutoff valve), to eliminate this malfunction, it is necessary to disassemble the shutoff valve and remove dirt particles and/or replace the piston and/or replace the shutoff valve and/or replace the seal.

Also, a malfunction such as leakage of the working medium (i.e. leakage, seepage, release, leakage, outflow of the working medium) through the plug / plugs may occur (probable causes of the malfunction: 1. damage to the seal of the plug; 2. wear of the external thread of the plug and/or its mating part - the internal thread in the housing compartment), to eliminate this malfunction, it is necessary to unscrew the plug and replace the damaged plug seal with a new one, and then tighten the plug.

Due to damage to the plug seal, lubricant can be squeezed out of the threaded connection of the plug and the housing compartment, which in turn leads to the following disadvantages:

- uneven coating of threads with lubricant with the formation of "dry" friction zones;

- the occurrence of internal stress on the threads;

- increased wear of the threaded connection (loss of mass of the external thread of the plug and the counterpart to it - the internal thread in the housing compartment after repeated twisting and unscrewing of the plug);

– lack of protection of the threaded connection against corrosion;

– decrease in the resource of a threaded connection (deterioration of operational and technical characteristics when tightening and unscrewing the plug);

– accelerated aging of the threaded connection.

After putting the throttle valve into operation, if the plug seal is damaged, the flow of the working medium through the plug is not carried out due to the presence of a tight inter-turn contact of the threaded connection of the plug and the housing compartment.

During the operation of the throttle valve, when the plug is unscrewed/screwed from/into the housing compartment, the threads of the plug threads and the threads of the housing compartment are gradually worn out. If the plug seal is damaged under the pressure of the working medium, the lubricant is gradually squeezed out of the threaded connection of the plug and the housing compartment due to the wear of the threads, and, accordingly, the lack of tight interturn contact of the threaded connection.

During the operation of the throttle valve, after replacing the plug seal and lubricating the plug thread, with each subsequent destruction of the plug seal, the lubricant is squeezed out again, while the partially destroyed threads (as mentioned above, in the absence of lubrication, the threads wear intensively) continue to break down even more without lubrication , therefore, with each cycle of destruction of the seal of the plug, the thread is destroyed more and more intensively, and if at the beginning of the operation of the throttle valve the passage of the working medium through the plug is not carried out due to the presence of a tight inter-turn contact of the threaded connection of the plug and the housing compartment, then further during the operation of the throttle valve due to wear of the threads, it is necessary to immediately stop the operation of the throttle valve, unscrew the plug and change the seal when the plug seal is destroyed. The number of unscrewing-tightening operations of the plug progresses with each year of operation of the throttle valve.

Leakage of gas (if the working medium is a gas) through the plug/plugs can be detected visually (soap solution bubbling or grease squeezing out of the threaded connection) or using a gas analyzer. Also, the passage of gas is accompanied by a whistle or hiss, however, if a throttle valve is installed, for example, in a gas reduction unit, then this noise cannot be heard (in gas reduction units with a high throughput, volumes of the working medium flow from several tens to several hundred thousand cubic meters per hour, and sound pressure levels increase to values exceeding 100-110 dBA).

The passage of liquid (if the working medium is a liquid) through the plug/plugs can be detected visually (fluid jets or squeezing of lubricant from the threaded connection).

If the above malfunctions occur, it is necessary to unscrew the plug / plugs, repair / replace the shut-off valve and / or replace the plug seal and tighten the plug / plugs of the throttle valve.

From the prior art (instruction for repair and maintenance of multifunctional gas flow control systems based on a discrete throttle valve (DKD). - 8 pages - Moscow. - EcoGazEnergo. https://web.archive.org/web/ 20160828014436/http://ecogazenergo.ru/files/Instruction%20on%20repair%20and%20maintenance%20DKD.pdf, the date of caching information according to the site http://web.archive.org/ - 28.08.2016) a method of opening - closing the compartments of the valve-throttle, which includes a sequence of actions:

1. Removing the lock washer (retaining ring);

2. Unscrewing and removing the plug from the housing compartment;

3. Removal of the Belleville lamellar (dish-shaped) springs;

4. Taking out the shockproof mass;

5. Removing the coil spring from the piston;

6. Removing the piston from the sleeve;

7. Inspection of the piston seals (with holding against accidental falling);

8. Replacement of the side seal (o-ring) of the piston if the side seal is damaged;

9. Inserting the piston into the sleeve;

10. Inserting a coil spring into the piston;

11. Insert shockproof mass;

12. Belleville leaf spring insert;

13. Tightening the plug;

14. Installation of a lock washer;

15. Checking the operation of the shut-off valve in the mode of manual mechanical control using the handle of the electro-pneumatic trigger (EPT).

At the same time, the above instructions do not describe the features of some actions, characterized by complexity and disadvantages.

After inserting the Belleville leaf springs and sealing the plug (the above instructions omitted information on installing the plug seal), then the plug is screwed into the compartment of the valve-throttle body, however, before tightening, you must first touch the first thread of the plug to the first thread of the seat in the compartment of the valve body. throttle, then, observing the alignment of the plug relative to the compartment of the valve-throttle body, turn the plug (clockwise, if the thread is right-handed) and align (i.e. engage) the first thread of the plug and the first thread of the seat, then tighten plugs in the compartment.

Hereinafter, the term "seat" refers to a part of the space inside the compartment of the valve-throttle body, equipped with an internal thread for accommodating a plug equipped with an external thread.

Hereinafter, the terms "throttle body compartment", "body compartment", "throttle valve compartment" and "compartment" are used interchangeably, unless otherwise expressly indicated. Hereinafter, the term "compartment" means a part of the space inside the valve-throttle body, which has a cavity and is separated from other parts of the body, while at the end of the compartment there is a hole closed with a plug for servicing the shut-off valve located in the compartment.

Hereinafter, the terms "female seat thread" and "seat thread" are used interchangeably, unless otherwise expressly indicated. The thread of the seat is characterized by the presence of threads, while the first thread is a full thread, closest to the end of the compartment, and the second thread is a full thread, following the first thread.

Hereinafter, the terms "external plug thread", "external plug thread" and "plug thread" are used interchangeably, unless otherwise expressly indicated.

At the plug, one of the ends in cross section may have inwardly concave parts and outwardly convex parts, which alternate and repeat in the radial direction around the center point of the end of the plug; and be of any geometric shape, such as a triangle, curvilinear triangle, square, rectangle, parallelogram, rhombus, trapezoid, trapezoid, deltoid, pentagon, hexagon, heptagon, octagon, nonagon, decagon, circle with external projections, ellipse, or oval . This end face with adjacent concave / convex parts (faces) of the plug is designed to be connected to an installation tool (for example, a wrench) having the corresponding shape of concave and convex parts. This end face with adjacent concave/convex parts (faces) of the plug will hereinafter be referred to as the "plug head".

The external thread of the plug is made in such a way that the first thread is as far as possible from the plug head, but close to the second end of the plug, while the second thread and subsequent turns (third, fourth, etc.) approach the plug head and , respectively, are removed from the second end of the plug. The last thread of the plug is as close as possible to the head of the plug and as far as possible from the second end of the plug (relative to other threads of the plug). The second end with the plug area adjacent to it, equipped with an external thread, will hereinafter be referred to as the "threaded end of the plug". The plug head can be connected directly to the threaded end of the plug or through transitional elements having in their cross section, for example, a circle, a square, a triangle, a rectangle, a parallelogram, a rhombus, a trapezoid, a trapezoid, a deltoid, a pentagon, a hexagon, a heptagon, an octagon, a nonagon , decagon, circle with external ledges, ellipse or oval.

The main disadvantage of the above method of closing the compartments of the throttle valve is that it is very difficult to touch the first thread of the plug with the first thread of the seat (it is obvious that if the plug screwed into the compartment forms a compression of the spring block that creates a force to move the stop valve piston to the extreme position, then the spring block located in the compartment, being in an unloaded (i.e., uncompressed) state, has dimensions exceeding its dimensions in a loaded (i.e., compressed by a twisted plug) state, since a force must be applied to the spring block to overcome the resistance of the spring block to compress it.

The spring block in an unloaded (i.e., uncompressed) state does not allow the first thread of the plug to touch the first thread of the seat, because. the springs of the spring block, or elements connected to the spring block (for example, shockproof mass, etc.) protrude relative to the first thread of the seat, therefore, in order to touch the first thread of the plug with the first thread of the seat, it is necessary to press on the plug with force, overcoming the resistance of the spring block, as a result of which the length of the spring block will decrease (i.e., shrink) to such an extent that the plug can be screwed into the compartment.

In order to put pressure on the plug, placed with its threaded end in the compartment, the user can use improvised means, and you can also lean on the head of the plug with your shoulder (while resting your feet on the floor), or simply press it with both hands or a foot. In addition, since the compartments are located around the circumference of the valve-throttle body, some of the compartments can be located low, for example, at floor level, so when closing the compartments, the user needs to take an uncomfortable position (bending down or squatting, kneeling), while In this case, it is impossible to control the coaxiality of the plug relative to the compartment; therefore, it may not move along the thread of the seat. The movement of the plug not along the threads of the seat is fraught with damage to the threads (i.e. deformation of the threads) of both the plug and the seat.

If the thread of the seat is damaged, it is impossible to tighten the plug, therefore, the throttle valve cannot be operated, since when the working medium is supplied, it (the working medium) will exit under pressure from the compartment with a deformed thread of the seat due to the absence of a plug there.

If the thread of the seat is damaged, there are two options:

1. It is possible to weld this compartment with a deformed seat thread, using suitable threadless devices (such as a cap, cylinder or circle) instead of a threaded plug to compress the check valve spring block, however this method is characterized by the impossibility of further maintenance of the check valve placed in this brewed compartment.

2. It is possible to restore the operability of the throttle valve by cutting out (for example, oxygen (gas), air-plasma cutting) this compartment with a deformed thread of the seat and weld a new compartment with a prepared thread in its place.

The above options are complex, so it is advisable to close the compartment, keeping the coaxiality of the plug relative to the compartment, so as not to deform the threads of the plug and the threads of the seat.

The technical problem is the resistance of the spring block (and elements connected to it, for example, shockproof mass, etc.), protruding relative to the first thread of the seat thread, to closing the compartment with a plug, because. to compress an unloaded spring block, it is required to apply such a force on the spring block with the plug that is sufficient to overcome the resistance of the spring block and reduce the length (i.e., compress) of the spring block to such an extent that the plug can be screwed into the compartment. When the plug applies the necessary force to the spring block and the elements connected to it, the user exerts the maximum effort to overcome the resistance of the spring block and cannot control the coaxiality of the plug relative to the compartment, as a result of which deformation of the threads of the plug and the threads of the seat is possible. Also, when the spring block is compressed, the elastic force of the spring block increases, as a result of which it is difficult to touch the plug of the first thread of the seat with the first thread and engage them.

The technical results of the claimed invention are ensuring the closure of the throttle valve compartment under the influence of the spring block on the plug, ensuring the coaxiality of the plug relative to the valve-throttle body compartment, ensuring the safety of the threads of the plug, ensuring the safety of the threads of the seat in the compartment of the valve-throttle body.

The technical result is achieved by the fact that a clamping device is installed on the pipeline near the throttle valve, which presses the plug to the first thread of the seat located in the compartment of the valve-throttle body, with a force that overcomes the resistance of the spring block located in the aforementioned compartment of the valve body. throttle, until the first thread of the plug is pressed against the first thread of the aforementioned seat, after which the plug is screwed into the aforementioned compartment of the valve-throttle body by means of an installation tool.

It is advisable to install a clamping device on the inlet pipeline.

It is allowed that the clamping device be installed on the outlet pipeline.

It is advisable that the clamping device be installed on the pipeline near the throttle valve by means of clamps or ties, or chains, or belts, or cables, or brackets, or wire, or bundles, or bandage, or mounting tape, or clips with holes in the side walls for a threaded connection, or clamps consisting of two half-shells with holes in the side walls for a threaded connection, or clamps consisting of two half-shells connected by spring latches, or quick-detachable connectors, or a magnetic assembly.

It is recommended to press the plug against the first thread of the seat with at least one pressing element of the pressing device.

It is advisable that the installation tool is a flat wrench or a ratchet wrench, or a reversible wrench, or an end head, or an end head connected to the drive handle, or a torque wrench.

It is allowed that in the process of pressing the plug to the first turn of the thread of the seat, the elastic force of the spring block is controlled using a pressing device equipped with a strain gauge or a set of strain gauges, or a strain gauge dynamometer, or a piezoresistive measuring element.

It is allowed that when tightening the plug, tightening is controlled using an electronic device or a torque wrench.

It is recommended, after pressing the first thread of the plug to the first thread of the seat and engaging them, to tighten the plug with the termination of its pressing by the pressing device.

It is allowed after pressing the first turn of the thread of the plug to the first turn of the thread of the seat and their engagement, tighten the plug with its continuation by pressing the device for pressing.

The use of a clamping device, which presses the plug against the first thread of the seat, allows the user, when closing the compartment, to control the plug from the side, top, bottom and end, respectively, directing the gaze both at the side surface and at the end (ends) of the plug, tracking all changes in the spatial arrangement of the plug relative to the compartment. The user, visually controlling the spatial location of the plug relative to the compartment, in the event of vertical and / or horizontal deviations of the longitudinal axis of the plug relative to the longitudinal axis of the compartment, sees them and promptly acts on the plug and / or the clamping device to eliminate deviations, which thereby affects the implementation of such technical result, as ensuring the coaxiality of the plug relative to the compartment.

Due to the visual control by the user of the spatial location of the plug relative to the compartment, in the event of vertical and / or horizontal deviations of the longitudinal axis of the plug relative to the longitudinal axis of the compartment, the user immediately acts on the plug and / or the clamping device to eliminate deviations, which thereby prevents the plug from moving. along the thread, therefore, such technical results as ensuring the safety of the threads of the plug and ensuring the safety of the threads of the seat are achieved. As described above, the user pressing the plug with his hands/feet to overcome the resistance of the spring block located in the compartment cannot control the spatial location of the plug relative to the compartment, as a result of which it may not move along the thread of the seat. When using the clamping device, the user does not need to carry out excessive labor to overcome the resistance of the spring block, since if the clamping device is automatic, the user only visually observes the longitudinal movement of the plug, controlling and correcting (if necessary) the spatial arrangement of the plug that has not yet entered with their threads into engagement with the threads of the seat. If the clamping device is made manually, then it also minimizes labor costs to overcome the resistance of the spring block: the user acts on the clamping device with one hand, while he can also control the plug from the side, top, bottom and end, respectively, visually observing the longitudinal movement plugs, controlling and correcting (if necessary) with the second hand the spatial arrangement of the plug, which has not yet entered into engagement with the threads of the seat with its threads.

Since the compartments are located around the circumference of the valve-throttle body, some of the compartments can be located low, for example, at floor level, so if when closing the compartments, devices are used that can be installed on the floor (ground, concrete, etc.) and with the possibility of extension-shortening in order to change its length and provide clamping of both the plugs installed in the compartments at the floor level and the plugs installed in the compartments in the upper part of the case, then these devices must be equipped with fixation nodes on the floor in order to be fixed on floor and at the same time provide a sufficient degree of fastening without moving from its location when a force is applied to the plug that overcomes the resistance of the spring block. It is obvious that such a device, made with the possibility of installation on the floor, increases the labor costs when screwing more than one plug (since it is necessary to adjust the dimensions of the device in order to reach from the floor to each plug), while if the fixation assembly is not securely fixed to the floor, then when a force is applied to the plug sufficient to overcome the resistance of the spring block, the device is displaced (for example, slides) on the floor, and forms an unpredictable effect on the plug (for example, an impact is formed that is not directed to the longitudinal movement of the plug, but to the vertical and / or horizontal deviation of the longitudinal axis of the plug relative to the longitudinal axis of the compartment).

Thus, only the placement of a clamping device on the pipeline near the throttle valve ensures its reliable fixation relative to the compartments, while preventing vertical and / or horizontal deviation of the longitudinal axis of the plug relative to the longitudinal axis of the compartment, preventing movement of the plug not along the thread, therefore, such technical results are achieved , as ensuring the safety of the threads of the plug and ensuring the safety of the threads of the seat. Also, labor costs are reduced, because. there is no need for lengthening-shortening of the aforementioned devices, tk. the length from the outer surface of the pipeline to the compartment of the throttle valve is the same for each compartment, therefore, the clamping device, equipped with one pressure element, only needs to be displaced along the circumference of the pipeline (for example, with eight compartments - by 45 °). Also, if the number of pressing elements of the clamping device corresponds to the number of compartments, then it is obvious that it is not necessary to displace the clamping device around the circumference of the pipeline. If the number of pressing elements of the clamping device, for example, is two, and the compartments, for example, eight, then the clamping device must be displaced by 90° around the circumference of the pipeline.

When installing a clamping device on the inlet pipeline, the clamping device is located near the ends of the compartments into which it is necessary to screw the plugs, which allows the user, when visually monitoring (during the closing of the compartment) the spatial location of the plug relative to the compartment, also visually control the clamping device and in the event of visually controlled prerequisites for its failure (breakage, deformation), with possible further unpredictable impact on the plug (for example, the formation of an impact directed not at the longitudinal movement of the plug, but at the vertical and / or horizontal deviation of the longitudinal axis of the plug relative to the longitudinal axis compartment) the user can immediately stop the impact on the plug by the clamping device, thereby preventing the plug from moving out of the thread, therefore technical results such as ensuring the safety of the threads of the plug and ensuring the safety of the threads of the seat are achieved.

When installing the clamping device on the outlet pipeline, it is ensured that the majority of the clamping device (namely, its parts mounted on the pipeline) is located far from the ends of the compartments into which it is necessary to screw the plugs, which allows freeing up space near these ends of the compartments, therefore, for the user facilitated (i.e., reduced labor costs) closing the compartment, tk. nothing prevents him from being conveniently located and visually controlling the alignment of the plug relative to the compartment.

When attaching a clamping device to a pipeline, it is necessary that it is securely fixed to the pipeline, which can be provided by means that ensure fixation on a number of pipeline diameters from a wide range, such as clamps, ties, chains, belts, cables, brackets, wire , harnesses, bandage, mounting tape or magnetic assembly; Also, such means can be used that ensure fixation on the same diameter of pipelines, such as, for example, clips with holes in the side walls for a threaded connection, clamps consisting of two half-shells with holes in the side walls for a threaded connection, clamps consisting of two half-shells connected spring latches or quick-release connectors.

Reliable fixation of the clamping device relative to the compartments prevents displacement of the clamping device after it is fixed on the pipeline, accordingly, the possibility of the clamping device forming an unpredictable effect on the plug, leading to a vertical and/or horizontal deviation of the longitudinal axis of the plug relative to the longitudinal axis of the compartment, is prevented, movement of the plug is prevented. along the thread, therefore, such technical results as ensuring the safety of the threads of the plug and ensuring the safety of the threads of the seat are achieved.

If the clamping device is made manually, then it is enough for the user to act on the clamping device with one hand, which, due to the presence of at least one lever, generates a force that overcomes the resistance of the spring block located in the compartment. If the clamping device is automatic, then a hydraulic mechanism, a pneumatic mechanism, etc. can be used to generate a force that overcomes the resistance of the spring block located in the compartment.

The pressing device interacts with the plug head with at least one pressing element. If there is only one pressure element and the dimensions of its end (in cross section) are smaller than the dimensions of the end of the plug, then it forms an impact on the center of the end of the plug or the area of the end of the plug close to the center. If there is only one pressure element and the dimensions of its end (in cross section) are equal to the dimensions of the end of the plug, or slightly less than the dimensions of the end of the plug, or greater than the dimensions of the end of the plug, then it is oriented coaxially (or approximately coaxially) with the end of the plug. If there are several pressure elements, and they are installed, for example, along a circle, then this circle of pressure elements is oriented coaxially (or approximately coaxially) with the end of the plug and an impact is formed on its end. Also, in addition to the circle, the pressure elements can form other geometric shapes (square, triangle, etc.), which must also be oriented coaxially (or approximately coaxially) with the end of the plug.

The end of the pressure element may be spherical or partially spherical, or flat, or cylindrical, or pyramidal, or wedge-shaped. The impact of the pressure element on the center of the end of the plug or on the areas close to the center of the end of the plug, or on the entire end of the plug, to press it against the first thread of the seat, prevents the vertical and / or horizontal deviation of the longitudinal axis of the plug relative to the longitudinal axis of the compartment, therefore it is prevented the movement of the plug is not on the thread, thus achieving such technical results as securing the threads of the plug and securing the threads of the seat.

Obviously, without the use of an installation tool, it is very difficult to screw the plug into the compartment with bare hands, so the use of an installation tool directly affects the technical result. The use of certain types of installation tools can reduce labor costs for closing the compartment, for example, such types of installation tools as a ratchet, reverse wrench or socket connected to a ratchet drive handle, due to the presence of a ratchet mechanism, allow you to tighten the plug without removing the installation tool from plugs and without resetting it to its original position.

In the process of pressing the plug to the first thread of the seat, the user controls the moment when the first thread of the thread touches the plug of the first thread of the seat by the sound of the collision of the threads or tactilely by the absence of movement of the plug and the clamping device and a sharp increase in resistance (when using a manual clamping device), or it can be controlled by a manual clamping device equipped with a strain gauge or a set of strain gauges, or a strain gauge dynamometer, or a piezoresistive measuring element, i. e. according to the sensors. Also, when using an automatic clamping device equipped with a strain gauge or a set of strain gauges, or a strain gauge dynamometer, or a piezoresistive measuring element, according to the readings of the sensors, the elastic force of the spring block is controlled and, with a sharp increase in the readings of the sensors, a conclusion is formed about the contact of the first turn of the plug thread with the first turn threads of the seat, after which the pressing of the plug by the clamping device stops, and the plug is screwed into the compartment by means of the installation tool. Also, the presence of the aforementioned sensors allows saving data on the elastic force of the spring block in the database for subsequent analysis and making decisions on correcting the process of closing the compartment in order to ensure the safety of the threads of the plug and the safety of the threads of the seat.

Tightening the plug with simultaneous control of tightening using an electronic device or a torque wrench allows saving data on the tightening torque of the plug in the database for subsequent analysis and making decisions on correcting the process of closing the compartment in order to ensure the safety of the threads of the plug and the safety of the threads of the seat. Also, the determination of the correct engagement of the threads of the seat and the threads of the plug is carried out directly by the user by tactile sensations (when manually tightened by the user), however, the use of an electronic device or a torque wrench allows additionally determining the correct engagement of the threads of the seat and the threads of the plug.

After pressing the first thread of the plug to the first thread of the seat and engaging them, the plug is screwed into the compartment with an installation tool with the cessation of its pressing by the clamping device, because when using a clamping device (manual or automatic), it is possible to deform the threads of the plug and / or seat, because the increase in force applied to the plug head must be synchronized with the process of screwing the plug into the compartment, which is not always possible to achieve. Thus, the termination of pressing the plug by the pressing device ensures the safety of the threads of the plug and the safety of the threads of the seat.

Also, after pressing the first thread of the plug to the first thread of the seat and engaging them, you can screw the plug into the compartment with an installation tool while continuing to press it with the clamping device, because. the elastic force of the spring block when the plug is screwed in increases (the elastic force of the spring block increases when the spring block is compressed), while the spring block (and elements connected to it, for example, shockproof mass, etc.) forms an effect on the plug (if the elastic force of the spring block of the block exceeds the strength limits of the thread of the plug and/or seat, this will lead to thread failure (crumpling/fracture of the threads) of the plug and/or seat), compensating the impact of the spring block on the plug and reducing the load on the thread, in connection with which the safety of the threads of the plug and the safety of the threads of the seat is ensured.

The present invention will become better understood from the following description of the figures with reference to the appended figures, which show a non-limiting embodiment of the invention, a practical embodiment of the invention, where:

in fig. 1 is an isometric view of a manual pressing device; the dashed line shows the axis of rotation of the lever of the manual clamping device relative to the assembly that secures the manual clamping device to the pipeline and is made in the form of a clamp consisting of two half-rings;

in fig. 2 schematically shows a top view with a local cut in the valve-throttle body with two compartments closed by plugs; on the inlet pipeline there is a manual clamping device from figure 1, which presses the plug inserted with its threaded end into the housing compartment, to the first thread of the seat; the dashed line shows the location of the lever of the manual device for clamping when it is rotated relative to the axis of rotation by 45 ° and 90 °; rotational movement of the lever of the manual pressing device between the position in which it presses the plug with its pressing element and the position (shown in dashed line) in which the pressing element is retracted from the plug, indicated by a double arc arrow; a single arrow conditionally shows the direction of movement of the working medium during the operation of the throttle valve;

in fig. 3 schematically shows a left side view of a choke valve with numbered compartments without plugs (the compartments are conditionally shown empty and without consumable washers in the baffle); double arc arrows show the angles between the longitudinal axes of adjacent compartments;

in fig. 4 shows photographs of the process of closing the compartment by the user without using a clamping device; in fig. 4a shows how the user applies force to the plug (the direction of force is shown by the arrow and the letter F) with one hand, and with the other hand aligns the plug with the compartment; in fig. 4b shows the user applying force to the plug (direction of force shown by arrows and F) with both hands; in fig. 4c shows the user applying force to the plug (direction of force shown by arrow and letter F) with one hand;

in fig. 5 shows photographs of the process of closing the compartment by the user without using the clamping device (continuation of the process of closing the compartment from Fig.4); in fig. 5a shows how the user stopped applying force to the plug, and the plug, under the action of the elastic force of the spring block, began to move in the direction “out of the compartment”; in fig. 5b shows a plug that has fallen out of the compartment (the result of the movement of the plug from Fig. 5a in the direction "out of the compartment");

in fig. 6 shows photographs of the process of closing the compartment with a manual clamping device; in fig. 6a shows how the user aligns the plug coaxially with the compartment with his hand, while the arrow shows the direction of rotation of the lever of the manual clamping device around its axis of rotation, and the lever itself lies on the surface of the inlet pipeline (part of the lever is not included in the frame); in fig. 6b shows how the user with one hand (this hand and part of the lever were not in the frame) using the lever of the manual pressing device presses the plug against the first thread of the seat (the direction of force is shown by the arrow and the letter F), and with the other hand aligns the plug coaxially with the compartment; in fig. 6c shows a plug partially screwed into the compartment;

in fig. 7 is a photograph of the throttle valve with the plug from FIG. 4-6 (all other plugs are also screwed into the compartments); the lever of the manual clamping device lies on the surface of the inlet pipeline (part of the lever is not included in the frame).

The method of closing the valve-throttle compartment is carried out as follows.

On the inlet 1 (indicated by the positions in Fig. 2.3; shown in Fig. 4-7, but not marked with positions) or outlet 2 (Fig. 2) pipeline near the throttle valve 3 (indicated by the positions in Fig. 2.3; shown in Fig. 4-7, but not indicated by positions) install a manual or automatic device for pressing (manual device for pressing is shown in Fig. 1, 2, 6, 7, but not indicated by the position). It is preferable that the clamping device be installed on the inlet 1 pipeline. The inlet 1 and outlet 2 pipelines are pipelines connected, respectively, to the inlet and outlet pipes (shown in Fig. 2, 7, but not indicated by the position) of the throttle valve 3. The clamping device can be manual (Fig. 1, 2 , 6, 7) or automatic (not shown in Fig.), a manual clamping device is preferable. If the clamping device is made manually, then it must be equipped with at least one lever 4 (indicated by the positions in Fig. 1.2; shown in Fig. 6, 7, but not indicated by the positions), which the user can act on (shown in Fig. 4-6, but not indicated by positions) with his hand/hands (shown in Fig. 4-6, but not indicated by positions). If the clamping device is made automatic, then to generate a force that overcomes the resistance of the spring block 5 (Fig. 2) placed in the compartment 6 , hydraulic, pneumatic, mechanical, electric (in the form of an electromagnet) mechanisms or combinations thereof can be used.

The clamping device (manual or automatic) is securely fixed on the pipeline near the throttle valve 3 by means of the fixation assembly on the pipeline 7 (indicated by positions in Fig. 1, 2; shown in Fig. 6, 7, but not indicated by positions), while in fixation nodes 7 can use such means that provide fixation on a number of diameters of pipelines from a wide range, such as, for example, clamps (shown in Fig. 1, 2, 6, 7), ties, chains, belts, cables, brackets, wire, bundles , bandage, mounting tape, magnetic assembly (not shown in Fig.) or combinations thereof; Also, such means can be used that ensure fixation on the same diameter of pipelines, such as, for example, clips with holes in the side walls for a threaded connection, clamps consisting of two half-shells with holes in the side walls for a threaded connection, clamps consisting of two half-shells connected spring latches or quick-detachable connectors (not shown in the figure).

If the clamping device is fixed on the pipeline using, for example, a clamp, then it can be composite, for example, in the form of two half-rings connected to each other (shown in Fig. 1, 2, 6, 7, but not marked with positions). The half rings can be connected to each other by a groove connection or by means of a swivel joint or a rotational block. Half rings can be rigidly fixed (after installation on the pipeline) with each other by means of a tie bolt (consisting, for example, of a pair of bolt(stud/pin)-nut(sleeve)), latch or retainer in any part (for example, the bottom and/or top) collar. Clamp half-rings can be made of a metal, ceramic-metal or reinforced plastic strip and covered on the inner (contacting with the surface of the pipeline) side with an anti-slip coating 8 (indicated by the position in Fig. 1; shown in Fig. 2, 6, 7, but not indicated by positions) and / or a coating that prevents damage to the protective coating of the pipeline near the throttle valve 3. The anti-slip coating 8 ensures reliable fixation of the clamping device on the pipeline near the throttle valve 3. an alkyd coating or an epoxy coating or a polyester coating or a polyurethane coating or a silicone modified coating or a PVC based coating or a fluoropolymer based coating or a rubber coating or combinations thereof.

If the clamping device is made automatic, then its body (not shown in the figure) must have additional stops (not shown in the figure) that prevent changing the position of the clamping device body relative to compartments 6. For a manual clamping device, stops are not needed, because .To. its lever 4 must be rotated by the user around its axis of rotation (shown in Fig. 1 by a dashed line, but not indicated by a position) to generate a force that overcomes the resistance of the spring block 5. If the longitudinal axis of the body of the automatic clamping device is perpendicular to the axis of the pipeline on which the assembly is fixed fixation 7, it is preferable that the body of the automatic pressing device is equipped with two stops, symmetrically (relative to the longitudinal axis of the body of the automatic pressing device) attached (for example, in the middle or in the upper part of the body (on opposite sides) of the automatic pressing device) c body of the automatic pressing device, for example, at an angle of 45° to the longitudinal axis of the body of the automatic pressing device and abutted against the surface of the pipeline.

If the clamping device is made manually, then its lever 4 must have at least one pressure element 9 (indicated by positions in Fig. 1, 2; shown in Fig. 6, 7, but not indicated by positions), and lever 4 must be connected with a fixation unit 7, for example, by means of a swivel (Fig. 1, 2, 6, 7) or a rotational block (not shown in Fig.), because lever 4 must be made with the possibility of rotation around its axis of rotation. If the pressing device is made automatic, then its pressing element (not shown in the figure) is connected not to the lever (because the automatic pressing device does not have a lever with which the user interacts), but to the body (and elements installed in body) of the automatic clamping device. Lever 4 can be made integral or composite, or telescopic. The lever 4 may be in the form of a rod, or a rod, or a cylinder, or a tubular element, and may have a cross-sectional shape such as rectangular or square, or semi-circular, or triangular, or trapezoidal, or round, or elliptical, or polygonal, or their combinations. The material for the lever 4 can be metal or composite or fiber reinforced plastic.

The clamping device (both automatic and manual) in operation interacts with the plug 10 (indicated by the position in Fig. 2; shown in Fig. 4-7, but not indicated by positions) with at least one pressure element 9. The pressure element 9 clamping device can be made integral or composite, or telescopic and can be connected to elements (for example, if the clamping device is made manually, then it is connected to lever 4, and if it is automatic, then it is connected to its body (and elements installed in the body )) devices for clamping by means of bolts or rivets or compression fittings or a welded joint or an adhesive joint or a solder joint or a clamp joint or a magnetic joint or a groove joint or a threaded joint or is made integral with the lever 4 by machining . The pressure element 9 of the pressing device (both automatic and manual) can be made in the form of a rod or a rod, or a cylinder, or a tubular element and can have a cross-sectional shape such as rectangular or square, or a semicircle, or triangular, or trapezoidal, or round, or elliptical, or polygonal, or combinations thereof. The end of the pressure element 9 may be spherical or partially spherical, or flat, or cylindrical, or pyramidal, or wedge-shaped. The pressure element 9 can be made of metal or composite or fibre-reinforced plastic. Also, the surface of the pressure element 9 can be covered with an elastic durable spark-proof material (for example, caprolactam, polyurethane, etc. - not shown in Fig.) or a soft spark-proof metal (for example, copper, bronze, etc. - in Fig. not shown), or the pressure element 9 can be made of a non-sparking material (for example, copper or bronze, etc.), which eliminates the occurrence of sparking when the pressure element 9 comes into contact with the plug 10. Also, at the base of the pressure element 9 (under the base is the second end of the pressure element 9, not in contact with the plug 10), a floating support (not shown in Fig.), made, for example, in the form of a single angular contact ball bearing, or a ball joint or a Hooke joint ( cardan connection). If there are several pressure elements 9, then it is preferable to place everything on one common floating support.

If, for example, a manual clamping device is used (Fig. 1), fixed on the pipeline by means of a clamp consisting of two half-rings, then the clamp (in which the half-rings are connected to each other by means of a hinged connection from one end of the half-rings, and from the other end by means of a clamping bolts) are installed on the pipeline near the choke valve 3 and fixed relative to compartment 6 of the choke valve 3, into which it is necessary to screw the plug 10, by installing semi-rings on different sides of the pipeline, inserting a coupling bolt into a pair of holes located near the ends of the semi-rings, with a slight tightening on nut (not shown in Fig.), tightening the loose nut on the bolt of the swivel of the half rings. The axis of rotation of the lever 4 (shown in Fig. 1) can be either an element of the swivel of the half-rings of the clamp (for example, a bolt, as in Fig. 1), or the half-ring of the clamp may have lugs (not shown in Fig.) to secure the axis of rotation of the lever 4 It is more optimal that the axis of rotation of the lever 4 is the element connecting the half-rings of the clamp to each other. Also, the axis of rotation of the lever 4 is the connection element of the lever 4 with the fixation unit 7.

After placing the manual clamping device on the pipeline, its lever 4 (for the convenience of inserting the plug 10 into the compartment 6) is temporarily supported on the surface of the pipeline, pivotally turning around its axis of rotation (the lever 4 lying on the surface of the inlet pipeline 1 is shown in Fig. 7; since the diameter of the input pipeline 1 in Fig. 7 increases, the angle between the longitudinal axis of the lever 4 and the longitudinal axis of the pipeline is greater than 0°).

Next, bring the plug 10 to the opening of the compartment 6, insert (Fig. 6a) its threaded end into the opening of the compartment 6 until the threaded end stops in the spring block 5 (or elements associated/connected with the spring block 5, for example, shockproof mass) and bring the lever 4 to the pressure element 9 (if it is one) to the end of the plug 10. Press the pressure element 9 on the end of the plug 10 (Fig. 6b) to determine the alignment of the pressure element 9 relative to the plug 10. If the pressure element 9 and the plug 10 are not coaxial, then due to the longitudinal ( along the axis of the pipeline) and transverse (around the axis of the pipeline) displacement of the fixation unit 7 (for example, a clamp) set the pressure element 9 coaxially with the plug 10 (in this case, the pressure element 9 must rest against the end of the plug 10, and the plug 10 must be coaxial with compartment 6 ), after which the fixation unit 7 is finally placed in the predetermined position (for example, if a clamp with half rings and a tie bolt with a nut is used, then the nut is tightened on the tie bolt with a significant tightening), thus completing the selection of the optimal installation location for the fixation unit 7 on the pipeline near throttle valve 3.

Further, the end of the lever 4, remote from the fixation unit 7, is acted upon with one hand, thus transferring the force through the pressure element 9 to the plug 10, which, in turn, moves longitudinally in the compartment to the first thread of the seat and compresses the spring block 5 located in compartment 6.

To move the plug 10 to the first thread of the seat, a force is required that is sufficient to overcome the resistance of the spring block 5. In this case, it is sufficient that the force acts on the end of the plug 10. If the force applied by the user to the plug 10 is greater than the force applied from the side of the spring block 5, then the plug 10 moves along the compartment 6 to the first thread of the seat, however, if the force applied by the user to the plug 10 is less than the force applied from the side of the spring block 5, then the plug 10 moves in the direction "out of the compartment" .

The impact of the pressure element 9 should be carried out on the center of the end of the plug 10, but it can also be carried out on areas close to the center of the end of the plug 10, as well as on the entire end of the plug 10, to press it against the first thread of the seat.

If the pressure element 9 is one and the dimensions of its end (in cross section) are smaller than the dimensions of the end of the plug 10, then it forms an impact on the center of the end of the plug 10 or the region of the end of the plug 10 adjacent to the center. If the pressure element 9 is one and the dimensions of its end ( in cross section) are equal to the dimensions of the end of the plug 10 or slightly less than the size of the end of the plug 10, or more than the size of the end of the plug 10, then it is oriented coaxially (or approximately coaxially) with the end of the plug 10. If there are several pressure elements 9, and they are installed, for example, along circle, then this circle of pressure elements 9 is oriented coaxially (or approximately coaxially) to the end of the plug 10 and form an impact on its end. Also, in addition to the circle, the pressure elements 9 can form other geometric shapes (square, triangle, etc.), which must also be oriented coaxially (or approximately coaxially) with the end of the plug 10.

The use of a clamping device, which presses the plug 10 to the first thread of the seat, allows the user, when pressing the plug 10, to control it from the side, top, bottom and end, respectively, directing his gaze both to the side surface and to the end surface of the plug 10, tracking all changes in the spatial arrangement of the plug 10 relative to the compartment 6. The user, visually controlling the spatial location of the plug 10 relative to the compartment 6, in the event of vertical and / or horizontal deviations of the longitudinal axis of the plug 10 relative to the longitudinal axis of the compartment 6, sees them and promptly acts on the plug 10 and /or a clamping device to eliminate deviations, thus maintaining the alignment of the plug 10 relative to the compartment 6.

When using the clamping device, the user does not need to carry out excessive labor to overcome the resistance of the spring block 5, since if the clamping device is automatic, the user only visually observes the longitudinal movement of the plug 10, controlling and correcting (if necessary) the position of the plug 10, more threads that have not entered into engagement with the threads of the seat. If the clamping device is made manually, then it also minimizes labor costs to overcome the resistance of the spring block 5, due to the presence of the lever 4.

In the process of pressing the plug 10 to the first thread of the seat, the user controls the moment when the first thread of the plug 10 touches the first thread of the seat by the sound of the collision of the threads or tactilely by the absence of movement of the plug 10 and the lever 4 and a sharp increase in resistance (when using a manual device for pressing ), or it can be controlled by a clamping device (manual or automatic) equipped with a strain gauge or a set of strain gauges, or a strain gauge dynamometer, or a piezoresistive measuring element, i.e. according to the readings of the sensors (not shown in Fig.). Based on the readings of the sensors, the elastic force of the spring block 5 is controlled, and with a sharp increase in the readings of the sensors, a conclusion is formed about the contact of the first thread of the plug 10 with the first thread of the seat, after which the pressing of the plug 10 stops, and it is screwed into the compartment 6 by means of an installation tool ( not shown in Fig.). Also, the presence of sensors makes it possible to save data on the elastic force of the spring block 5 in the database for subsequent analysis and decision-making on correcting the process of closing the compartment 6.

The spring block 5 is compressed until the first thread of the plug 10 touches the first thread of the seat, while it is necessary, without increasing the force applied to the plug 10, to continue to press it with a pressure element, and by hand, ensuring the alignment of the plug 10 relative to compartment 6, it is necessary to turn plug 10 around its longitudinal axis to such a position relative to the compartment 6, which will ensure engagement of the first thread of the plug 10 and the first thread of the seat. Next, the plug 10 is screwed by hand along the thread into compartment 6 for several turns (Fig. 6c). After checking whether the plug 10 is being screwed along the thread, you can stop pressing it with the pressing device (if it is manual, then the lever 4 with the pressure element 9 is hinged to the side, and if it is automatic, then the pressure element returns to its original position), and continue twisting plugs 10 to the end position in the compartment 6 already with the help of an installation tool, for example, a socket head installed on the head of the plug 10. The end head must have an internal hole corresponding to the external dimensions and shape of the plug head 10, for example, a hexagonal hole or a hole of any other shape, such as a dodecahedron.

As an installation tool, for example, a flat wrench or a ratchet wrench, or a reversible wrench, or a socket connected to the drive handle, or a torque wrench can be used. When using an installation tool provided with a ratchet mechanism, it is possible to tighten the plug 10 without removing the installation tool from the plug 10 and without resetting it to its original position. When using an installation tool such as, for example, a flat wrench, it is necessary to remove it from the plug 10 and reset it to its original position when screwing the plug 10.

Tightening the plug 10 with simultaneous control of tightening using an electronic device (not shown in the figure) or a torque wrench (not shown in the figure) allows saving data on the tightening torque of the plug 10 in the database for subsequent analysis and decision-making on correcting the closing process compartment 6. Also, the determination of the correct engagement of the thread of the seat and the thread of the plug 10 is carried out directly by the user by tactile sensations (with manual tightening), however, the use of an electronic device or a torque wrench allows additionally determining the correct engagement of the thread of the seat and the thread of the plug 10.

After pressing the first thread of the plug 10 to the first thread of the seat thread and engaging them, the plug 10 is screwed on with an adjusting tool with the termination or continuation of its pressing by the pressing device. The choice whether or not to continue pressing the plug 10 by the pressing device remains with the user, since there are both pluses and minuses when pressing the plug 10, there are both pluses and minuses when the pressing of the plug 10 is stopped, because when using a clamping device (manual or automatic), it is possible to deform the threads of the plug 10 and / or the threads of the seat, because the increase in force applied to the head of the plug 10 must be synchronized with the process of screwing the plug 10 into compartment 6, which is not always possible to achieve. Also, the elastic force of the spring block 5 when the plug 10 is twisted increases, while the spring block 5 forms an impact on the plug 10 (if the elastic force of the spring block 5 exceeds the strength limits of the thread of the plug 10 and / or the seat, this will lead to failure of the thread plug 10 and/or seat), thus, with continued pressing of the head of the plug 10, the effect of the spring block 5 on the plug 10 is compensated and the load on the thread is reduced.

It should be noted that more than one compartment 6 is located in the throttle valve body 3, for example, DKD-00-200/500 has eight compartments, respectively, all of them are equipped with plugs 10, which must be mounted in these compartments 6 to close them . Since the compartments 6 are located evenly around the circumference of the body of the valve-throttle 3 and equidistant from the longitudinal axis of the inlet pipeline 1, then the closure of all compartments 6 of the valve-throttle 3 is carried out by analogy with the above-described method of closing the compartment 6 (you only need to change the position of the clamping device by turning it around the longitudinal axis of the pipeline so that the pressure element is located coaxially with the compartment 6, in which the plug 10 will be mounted to close it).

Changing the position of the clamping device (for example, if a manual clamping device is used, shown in Fig. 1 and fixed on the pipeline by means of a clamp consisting of two half-rings connected to each other by means of a coupling bolt from one end of the half-rings) is carried out by unscrewing the nut on the coupling bolt, turning the clamping device around the longitudinal axis of the pipeline by 45° (figure 3 shows the angles between the longitudinal axes of adjacent compartments 6, equal to 45° with eight compartments 6), tightening the nut on the tie bolt with the coaxial location of the pressure element 9 relative to compartment 6 .

Thus, if the pressing device is equipped with one pressing element, then it must rotate around the longitudinal axis of the pipeline to press the next plug 10. If the number of pressing elements of the pressing device corresponds to the number of compartments 6, then it is obvious that turning the pressing device around the longitudinal axis of the pipeline no need. If the number of pressing elements of the clamping device is, for example, two, and the compartments, for example, eight, then the clamping device can be rotated around the longitudinal axis of the pipeline by 90°.

Examples of practical implementation.

The claimed method was used to close the compartments 6 on the throttle valve "DKD-00-200/500" company "EcoGazEnergo". The choke valve "DKD-00-200/500" had 8 compartments, evenly spaced around the circumference of the choke valve body 3 relative to the longitudinal axis of the inlet 1 pipeline. Throttle valve "DKD-00-200/500" was installed in the gas reduction unit and was used to control gas flows.

Example #1

An attempt was made to close the compartment 6 without a clamping device (FIGS. 4, 5). In FIG. 4a shows how the user applied force to the plug 10 (the direction of the force is shown by the arrow and the letter F) with one hand, and with the other hand aligned the plug 10 coaxially with respect to the compartment 6; it was not possible to touch the first thread of the plug 10 of the first thread of the seat.

In FIG. 4b shows how the user applied force to the plug 10 (the direction of force is shown by arrows and letters F) with both hands, while trying to align the plug 10 coaxially with the compartment 6. It was not possible to touch the first thread of the plug 10 with the first thread of the seat.

In FIG. 4c shows how the user applied force to the plug 10 (the direction of force is indicated by the arrow and the letter F) with one hand, while trying with the same hand to align the plug 10 coaxially with the compartment 6; it was not possible to touch the first thread of the plug 10 with the first thread of the seat, and it was not possible to align the plug 10 coaxially with respect to compartment 6.

After unsuccessful attempts to contact the first threads of the plug 10 and the seat and engage them, the user stopped applying force to the plug 10 and, under the action of the elastic force of the spring block 5, it began to move in the direction “out of the compartment” (Fig. 5a). The user, carefully supporting the plug 10, caught it (FIG. 5b) in order to prevent the plug 10 and/or the inlet 1 pipeline from falling and being damaged.

Example #2

On the input 1 pipeline near the throttle valve "DKD-00-200/500" installed a manual device for clamping (Fig. 1, 2, 6, 7). The clamping device was fixed on the inlet 1 pipeline by means of a clamp. A lever 600 mm long was pivotally connected to the clamp of the clamping device, to which a pressure element 150 mm long with a spherical end was perpendicularly attached by welding. The lever 4 and the pressure element 9 in cross section were a round metal pipe with an outer diameter of 20 mm. In compartment No. 5 (shown in Fig. 4-7, but not indicated by the position), located in the upper generatrix of the body of the throttle valve 3, a coil spring was inserted (shown in Fig. 2, included in the spring block 5). A seal was installed on the plug 10 (shown in Fig. 5b), and Belleville leaf springs and an anti-shock mass (shown in Fig. 2, 5b) were inserted into the recess of the plug 10. The user inserted the threaded end of the plug 10 into compartment #5 with one hand (FIG. 6a) while ensuring that the plug 10 was aligned with compartment #5. With the other hand, the user articulated the lever 4 around its axis of rotation (in Fig. 6a, the arrow shows the direction of rotation of the lever 4) and made sure that the end of the pressure element 9 of the lever 4 acts on an area approximately corresponding to the center of the end of the plug 10. With the help of manual action, with with a small effort, the user pressed the lever 4 with his hand (i.e. applied force, the direction of the force is shown by the arrow and the letter F in Fig. 6b), while the plug 10 was clamped by its ends between the pressure element 9 of the lever 4 and the spring block 5. The user gradually pressed the plug 10 to the first thread of the seat located in compartment No. 5 with a force that overcomes the resistance of the spring block 5 located in compartment No. 5. The plug 10 was pressed against the first thread of the seat gradually, without a sharp increase in effort, in order to avoid a sharp pressing of the first thread of the plug 10 against the first thread of the seat, which could deform these threads.

In the process of pressing the plug 10 to the first thread of the seat, the user visually and tactilely controlled the approach of the plug 10 to the first thread of the seat, and with a sharp increase in resistance, as well as the absence of movement of the plug 10, he concluded that the first thread of the plug 10 came into contact with the first thread seat, after which the user, with the hand that he supported the plug 10, rotating the plug 10 around its longitudinal axis, ensured the engagement of the first threads of the plug 10 and the seat. Next, the user articulated the lever 4 around its axis of rotation and placed it on the surface of the pipeline, after which he installed the end head (partially shown in Fig. 6c, because it did not enter the frame) on the head of the plug 10, which has hexagonal protrusions, then partially screwed the plug 10, turning the end head with his hands (the result of twisting is shown in Fig. 6c), after which he connected the end head with the drive handle (not shown in Fig.) and screwed the plug 10 completely into compartment No. 5 of the throttle valve 3 and installed the lock washer (Fig.7). Thus, the user was able to close the compartment 6 with minimal effort and was able to control and ensure the alignment of the plug 10 relative to the compartment 6, while maintaining the threads of the plug 10 and the thread of the seat.

Example #3

Example No. 3 differs from example No. 2 only in that a belt with lugs was used as a fixation unit 7 to secure the axis of rotation of the lever 4, and compartment No. 2 was closed. The user was able to close the compartment 6 with minimal effort and was able to control and ensure the alignment of the plug 10 relative to the compartment 6, while ensuring the safety of the thread of the plug 10 and the thread of the seat.

Example #4

Example No. 4 differs from example No. 2 only in that a magnetic assembly containing an electromagnet with lugs for fixing the axis of rotation of the lever 4 was used as the fixation unit 7, and compartment No. 4 was closed. The user was able to close the compartment 6 with minimal effort and was able to control and ensure the alignment of the plug 10 relative to the compartment 6, while ensuring the safety of the thread of the plug 10 and the thread of the seat.

Example #5

Example No. 5 differs from Example No. 2 in that an automatic pressing device was used as a pressing device, in which the pressing element was moved by a hydraulic mechanism, and compartment No. 7 was closed. A floating support in the form of an angular contact ball bearing was installed at the base of the pressure element. The clamping device was equipped with a strain gauge to control the elastic force of the spring block 5. The plug 10 was screwed into the compartment 6 by means of a torque wrench with control of the plug 10 tightness. , while ensuring the safety of the thread of the plug 10 and the thread of the seat.

For a person skilled in the art it is obvious that when using an automatic device for pressing its pressure element, moved by a hydraulic mechanism, acts on the plug 10, moving it to the first thread of the seat, and the user only needs to support the plug 10 and control its position relative to compartment 6. Also, if, for example, an automatic device for pressing extended functionality is used, which not only presses the plug 10, but also twists it into the throttle valve compartment, then the user does not need to support the plug 10, he only needs to install a pressure element that combines it also contains an installation tool, on the head of the plug 10 and to control the tightening process and monitor the readings of the sensors of the clamping device so that due to a malfunction of the sensors, the threads of the plug and / or the seat are not damaged.

It should be noted that the technical problem can be solved by constructive changes in the throttle valve itself: it is necessary to increase the length of each compartment of the throttle valve and / or increase the number of threads of the seat or shift the threads of the seat, thus eliminating the need for a clamping device, however , known throttle valves are not structurally located for this modernization by the operating organization, therefore this must be done directly at the manufacturer's factory when manufacturing the throttle valve. It should also be noted that there are choke valves, during the operation of which the stated technical problem does not arise, for example, the choke valve "DKD-00-300-700", it probably has an increased number of threads of the seat thread and / or an elongated compartment.

Thus, technical results are achieved - ensuring the closing of the throttle valve compartment under the influence of the spring block on the plug, ensuring the coaxiality of the plug relative to the valve-throttle body compartment, ensuring the safety of the threads of the plug, ensuring the safety of the threads of the seat in the compartment of the valve-throttle body.

Claims (10)

1. A method for closing the throttle valve compartment, which consists in installing a clamping device on the pipeline near the throttle valve, which presses the plug against the first thread of the seat located in the throttle valve housing compartment, with a force that overcomes the resistance of the spring block located in the aforementioned compartment of the valve-throttle body, until the first thread of the plug is pressed against the first thread of the above-mentioned seat, after which the plug is screwed into the aforementioned compartment of the valve-throttle body by means of an installation tool. 2. The method of closing the throttle valve compartment according to claim 1, characterized in that the clamping device is installed on the inlet pipeline. 3. The method of closing the compartment of the valve-throttle according to claim 1, characterized in that the clamping device is installed on the outlet pipeline. 4. The method of closing the throttle valve compartment according to claim 1, characterized in that the clamping device is installed on the pipeline near the throttle valve by means of clamps, or ties, or chains, or belts, or cables, or brackets, or wire, or harnesses , or a bandage, or a mounting tape, or clips with holes in the side walls for a threaded connection, or clips consisting of two half-shells with holes in the side walls for a threaded connection, or clips consisting of two half-shells connected by spring latches, or quick-detachable connecting devices, or magnetic assembly. 5. The method of closing the throttle valve compartment according to claim 1, characterized in that the plug is pressed against the first thread of the seat by at least one pressing element of the pressing device. 6. The method of closing the throttle valve compartment according to claim 1, characterized in that the installation tool is a flat wrench, or a ratchet wrench, or a reverse wrench, or an end head, or an end head connected to the drive handle, or a torque wrench . 7. The method of closing the valve-throttle compartment according to claim 1, characterized in that in the process of pressing the plug to the first thread of the seat, the elastic force of the spring block is controlled using a clamping device equipped with a strain gauge, or a set of strain gauges, or a strain gauge dynamometer, or piezoresistive measuring element. 8. The method of closing the throttle valve compartment according to claim 1, characterized in that when the plug is screwed in, tightening is controlled using an electronic device or a torque wrench. 9. The method of closing the throttle valve compartment according to claim 1, characterized in that after pressing the first thread of the plug to the first thread of the seat and engaging them, the plug is screwed in to stop pressing it with the clamping device. 10. The method of closing the compartment of the throttle valve according to claim 1, characterized in that after pressing the first thread of the plug to the first thread of the seat and engaging them, the plug is screwed in with its continued pressing by the clamping device.

Images