CN211010116U

CN211010116U - Constant pressure valve for preventing generation of natural gas hydrate

Info

Publication number: CN211010116U
Application number: CN201921439562.0U
Authority: CN
Inventors: 高玥; 彭星煜; 黄淑媛; 姚远
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-07-14
Anticipated expiration: 2029-09-02

Abstract

The utility model discloses a prevent constant pressure valve that natural gas hydrate generated, the water control valve comprises a valve body, the right side threaded connection of valve body has the input tube, the inside right side rigid coupling of valve body has the ring, the right surface laminating of ring has the filter screen, the right surface laminating of filter screen has the tetrafluoro packing ring, the tetrafluoro packing ring offsets tightly with the input tube, the left side threaded connection of valve body has the output tube. This prevent constant pressure valve that natural gas hydrate generated, through the valve body with prevent the cooperation between the thing generation mechanism that closes, when the inside temperature of valve body is lower, the nozzle stub of the solenoid valve left and right sides can be each other for the intercommunication, and then can reduce the gas pressure of the inside valve opening department of valve body, and then can effectively prevent natural gas hydrate's formation, avoid the condition of pipe blockage to appear, do benefit to the transport of natural gas, remind the cooperation between the mechanism through valve body and gas leakage, the staff can come timely leakproofness of knowing the valve body through the toper post.

Description

Constant pressure valve for preventing generation of natural gas hydrate

Technical Field

The utility model relates to a natural gas transport technical field specifically is a constant pressure valve that prevents natural gas hydrate from generating.

Background

The natural gas pipeline refers to a pipeline for conveying natural gas (including associated gas produced in oil fields) from a mining place or a processing plant to an urban gas distribution center or an industrial enterprise user, which is also called a gas conveying pipeline, at present, in the process of conveying the natural gas, a timing pressure valve is installed on the gas conveying pipeline to control the gas conveying duration of the gas conveying pipeline, in the process of opening the timing pressure valve, the size of a gap for gas to flow inside a valve body is obviously smaller than the size of the inner diameter of the gas conveying pipeline, so that the fluid pressure is increased and the temperature is reduced inside the valve body, initial conditions (three conditions are generally formed for forming the natural gas hydrate, namely low temperature, high pressure and natural gas source) for generating the natural gas hydrate are easily achieved, the generated hydrate can block the circulation of the pipeline and is not beneficial to the conveying of the natural gas, and in the long-term use process of the valve, the condition that slight leakage occurs is, easily causing great safety accidents.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a constant pressure valve for preventing the generation of natural gas hydrate, which solves the problems that in the prior art, during the natural gas transportation process, a timing pressure valve is arranged on the gas transmission pipeline to control the gas transmission time of the gas transmission pipeline, when the timing pressure valve is opened, the size of the gap for gas flowing in the valve body is obviously smaller than the size of the inner diameter of the conveying pipeline, therefore, the fluid pressure inside the valve body is increased, the initial conditions of the generation of the natural gas hydrate (the natural gas hydrate formation is generally three conditions, namely low temperature, high pressure and natural gas source), the generated hydrate can block the circulation of the pipeline and is not beneficial to the transportation of natural gas, and the valve can be used for a long time, once the slight leakage occurs, the situation is difficult to find in time, and a great safety accident problem is easy to cause.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevent constant pressure valve that natural gas hydrate generated, includes the valve body, the right side threaded connection of valve body has the input tube, the inside right side rigid coupling of valve body has the ring, the right surface laminating of ring has the filter screen, the right surface laminating of filter screen has the tetrafluoro packing ring, the tetrafluoro packing ring offsets tightly with the input tube, the left side threaded connection of valve body has the output tube, the bottom of valve body is equipped with waterproof thing that closes and generates the mechanism, the inside left side of valve body is equipped with gas leakage and reminds the mechanism.

Preferably, the waterproof composite substance generating mechanism comprises a solenoid valve, short pipes, an elbow, a vertical pipe, a sleeve ring, a support rod, a through groove, a temperature sensor, a disc, a rubber pad and a bolt, wherein the solenoid valve is positioned under the valve body, the short pipes are fixedly connected to the left side and the right side of the solenoid valve, the elbow is fixedly connected to the other end of each short pipe, the vertical pipe is fixedly connected to the valve body, the vertical pipe is communicated with the valve body, the sleeve ring is fixedly connected to the outer walls of the two short pipes, the support rod is fixedly connected to the top end of the outer wall of the sleeve ring, the support rod is fixedly connected to the valve body, the through groove is arranged at the center of the bottom end of the valve body, the temperature sensor is inserted into the through groove, the temperature sensor is in clearance fit with the through groove, the disc is fixedly, the rubber pad is tightly propped against the valve body, four bolts are inserted into the periphery of the lower surface of the disc, and the bolts sequentially penetrate through the disc and the rubber pad to be connected with the valve body through threads.

Preferably, the two collars are bilaterally symmetrical with respect to a center point of the solenoid valve.

Preferably, the central points of the temperature sensor and the valve body are both positioned on the same horizontal vertical line.

Preferably, the mechanism is reminded in gas leakage includes montant, sealed bearing, toper post, various strip lacquer and impeller, the montant is located the outer wall left side top front side of valve body, the montant passes through sealed bearing and rotates with the valve body and links to each other, the top rigid coupling of montant has the toper post, the outer wall spraying of toper post has various strip lacquer, the bottom rigid coupling of montant has the impeller.

Preferably, the central points of the impeller and the vertical rod are both positioned on the same horizontal vertical line.

Compared with the prior art, the beneficial effects of the utility model are that: this prevent constant pressure valve that natural gas hydrate generated, in-process using, through the valve body and the cooperation between the waterproof thing generation mechanism that closes, when the inside temperature of valve body is lower, the nozzle stub of the solenoid valve left and right sides can be each other for the intercommunication, and then can reduce the gas pressure of the inside valve opening department of valve body, and then can effectively prevent natural gas hydrate's formation, avoid the condition of pipe blockage to appear, do benefit to the transport of natural gas, remind the cooperation between the mechanism through valve body and gas leakage, during the valve body closure state, the problem then appeared in the leakproofness of explaining the valve body when the toper post takes place to rotate, the staff can come timely leakproofness of knowing the valve body through the toper post, in time handle is convenient, avoid taking place the incident.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view showing a connection structure of the valve body, the temperature sensor and the solenoid valve of FIG. 1;

FIG. 3 is a schematic view of a connection structure of the valve body and the air leakage reminding device in FIG. 1;

fig. 4 is a schematic view of a connection structure of the valve body, the input pipe and the strainer of fig. 1.

In the figure: 1. the valve comprises a valve body, 2, an input pipe, 3, an output pipe, 4, a waterproof compound generating mechanism, 401, an electromagnetic valve, 402, a short pipe, 403, an elbow, 404, a vertical pipe, 405, a lantern ring, 406, a support rod, 407, a through groove, 408, a temperature sensor, 409, a disc, 410, a rubber pad, 411, a bolt, 5, an air leakage reminding mechanism, 501, a vertical rod, 502, a sealing bearing, 503, a conical column, 504, color bar paint, 505, an impeller, 6, a circular ring, 7, a filter screen, 8 and a tetrafluoro gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a prevent constant pressure valve that natural gas hydrate generated, including valve body 1, the right side threaded connection of valve body 1 has input tube 2, the inside right side rigid coupling of valve body 1 has ring 6, the right surface laminating of ring 6 has filter screen 7, filter screen 7 is made for the stainless steel matter that the surface was covered with the through-hole, the mesh number is 40-80 mesh, can effectually prevent that the inside impurity of natural gas from entering into the inside of valve body 1, influence the normal use of valve body 1, the right surface laminating of filter screen 7 has tetrafluoro packing ring 8, tetrafluoro packing ring 8 offsets tightly with input tube 2, the left side threaded connection of valve body 1 has output tube 3, the bottom of valve body 1 is equipped with anti-hydrate and generates mechanism 4, the inside left side of valve body 1 is equipped with gas leakage warning mechanism.

The anti-hydrate generation mechanism 4 comprises an electromagnetic valve 401, short pipes 402, elbows 403, vertical pipes 404, lantern rings 405, supporting rods 406, a through groove 407, a temperature sensor 408, a disc 409, a rubber pad 410 and bolts 411, wherein the electromagnetic valve 401 is positioned under the valve body 1, the model of the electromagnetic valve 401 is NT01A and is electrically connected with an external control module group through a lead, the control module group can provide electric energy for the electromagnetic valve 401, the control module group is connected with a power supply, the short pipes 402 are fixedly connected to the left side and the right side of the electromagnetic valve 401, the elbows 403 are fixedly connected to the other ends of the short pipes 402, the vertical pipes 404 are fixedly connected to the other ends of the elbows 403, the short pipes 402, the elbows 403 and the vertical pipes 404 are communicated with each other, the vertical pipes 404 are fixedly connected with the valve body 1, the vertical pipes 404 are communicated with the valve body 1, the lantern rings 405, the stability of the electromagnetic valve 401 can be improved, the through groove 407 is arranged at the center of the bottom end of the valve body 1, the temperature sensor 408 is inserted into the through groove 407, the model of the temperature sensor 408 is DS18B20, the low-temperature sensing value is set to be 10 degrees, the high-temperature cancellation sensing temperature is 12 degrees, the temperature sensor 408 is electrically connected with the control module group through a wire, the control module group can provide electric energy required by the work of the temperature sensor 408, when the temperature sensor 408 senses that the gas temperature at the valve opening in the valve body 1 is lower than 10 degrees, a signal can be sent to the control module group, the module group can send an opening and closing instruction to the electromagnetic valve 401 at the moment, short pipes 402 at the left side and the right side of the electromagnetic valve 401 can be communicated with each other, when the temperature rises to above 12 degrees, the electromagnetic valve 401 is automatically closed, the upper surface rigid coupling of disc 409 has rubber pad 410, and rubber pad 410 is made for the rubber material, has certain toughness, and rubber pad 410 offsets tightly with valve body 1, and the lower surface of disc 409 inserts four bolts 411 all around, and bolt 411 runs through disc 409 and rubber pad 410 and valve body 1 screw thread in proper order and links to each other, bolt 411 and disc 409 clearance fit.

The two collars 405 are symmetrical left and right with respect to the center point of the solenoid valve 401, which is beneficial to increase the stability of the solenoid valve 401.

The central points of the temperature sensor 408 and the valve body 1 are both located on the same horizontal vertical line, which is convenient for the temperature sensor 408 to contact with the gas at the valve port inside the valve body 1.

Air leakage warning mechanism 5 includes montant 501, sealing bearing 502, toper post 503, various strip lacquer 504 and impeller 505, montant 501 is located the outer wall left side top front side of valve body 1, montant 501 rotates with valve body 1 through sealing bearing 502 and links to each other, sealing bearing 502's inner circle and montant 501 are fixed continuous, sealing bearing 502's outer lane and valve body 1 are fixed continuous, montant 501's top rigid coupling has toper post 503, toper post 503's outer wall spraying has various strip lacquer 504, the colour between every various strip lacquer is different, montant 501's bottom rigid coupling has impeller 505.

The central points of the impeller 505 and the vertical rod 501 are both located on the same horizontal vertical line, and when the impeller 505 is blown by gas, the impeller 505 and the vertical rod 501 can rotate concentrically.

When the constant pressure valve for preventing the generation of the natural gas hydrate is used, when the valve body 1 is opened and closed for natural gas transmission, because the size of a gap for flowing gas in the valve body is obviously smaller than the size of the inner diameter of a transmission pipeline, the pressure at the valve opening in the valve body 1 is larger, the temperature at the valve opening in the valve body 1 can be reduced along with the continuous flowing of the gas, when the temperature is as low as 10 degrees, the temperature sensor 408 can send a signal to the control module group, the module group can send an opening and closing instruction to the electromagnetic valve 401 at the moment, the short pipes 402 on the left side and the right side of the electromagnetic valve 401 can be communicated with each other, so that the gas pressure at the valve opening in the valve body 1 can be reduced, the generation of the natural gas hydrate can be effectively prevented, the condition of pipeline blockage is avoided, the natural gas transmission is facilitated, when the valve body 1 is in a closed, the problem of sealing the internal valve port of the valve body 1 is solved, and the user can timely know the sealing performance of the valve body 1 through the tapered column 503, so that the valve body is convenient to timely treat and avoid safety accidents.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a constant pressure valve that prevents gas hydrate formation, includes valve body (1), its characterized in that: the right side threaded connection of valve body (1) has input tube (2), the inside right side rigid coupling of valve body (1) has ring (6), the right surface laminating of ring (6) has filter screen (7), the right surface laminating of filter screen (7) has tetrafluoro packing ring (8), tetrafluoro packing ring (8) offset tightly with input tube (2), the left side threaded connection of valve body (1) has output tube (3), the bottom of valve body (1) is equipped with anti-hydrate generation mechanism (4), the inside left side of valve body (1) is equipped with gas leakage warning mechanism (5).

2. A constant pressure valve for preventing the generation of natural gas hydrates according to claim 1, wherein: the hydrate formation preventing mechanism (4) comprises an electromagnetic valve (401), short pipes (402), elbows (403), vertical pipes (404), lantern rings (405), supporting rods (406), through grooves (407), a temperature sensor (408), a disc (409), rubber pads (410) and bolts (411), wherein the electromagnetic valve (401) is positioned under the valve body (1), the short pipes (402) are fixedly connected to the left side and the right side of the electromagnetic valve (401), the elbows (403) are fixedly connected to the other ends of the short pipes (402), the vertical pipes (404) are fixedly connected to the other ends of the elbows (403), the vertical pipes (404) are fixedly connected to the valve body (1), the vertical pipes (404) are communicated with the valve body (1), the lantern rings (405) are fixedly sleeved on the outer walls of the two short pipes (402), the supporting rods (406) are fixedly connected to the top ends of the outer walls of the lantern rings (405), and the supporting rods (406) are, lead to groove (407) and set up the bottom center at valve body (1), temperature sensor (408) have been inserted to the inside that leads to groove (407), temperature sensor (408) and lead to groove (407) clearance fit, the fixed cover in outer wall bottom of temperature sensor (408) has been connect disc (409), the upper surface rigid coupling of disc (409) has rubber pad (410), rubber pad (410) offsets tightly with valve body (1), four bolts (411) have been inserted all around to the lower surface of disc (409), bolt (411) run through disc (409) and rubber pad (410) in proper order and link to each other with valve body (1) screw thread.

3. A constant pressure valve for preventing formation of gas hydrates according to claim 2, wherein: the two collars (405) are symmetrical left and right relative to the center point of the solenoid valve (401).

4. A constant pressure valve for preventing formation of gas hydrates according to claim 2, wherein: the central points of the temperature sensor (408) and the valve body (1) are both positioned on the same horizontal vertical line.

5. A constant pressure valve for preventing the generation of natural gas hydrates according to claim 1, wherein: air leakage warning mechanism (5) are including montant (501), sealed bearing (502), toper post (503), colored bar lacquer (504) and impeller (505), montant (501) are located the outer wall left side top front side of valve body (1), montant (501) rotate with valve body (1) through sealed bearing (502) and link to each other, the top rigid coupling of montant (501) has toper post (503), the outer wall spraying of toper post (503) has colored bar lacquer (504), the bottom rigid coupling of montant (501) has impeller (505).

6. A constant pressure valve for preventing the generation of natural gas hydrates according to claim 5, wherein: the central points of the impeller (505) and the vertical rod (501) are both positioned on the same horizontal vertical line.