CN220816650U

CN220816650U - Drainage and condensation valve and instrument pressure guiding pipe

Info

Publication number: CN220816650U
Application number: CN202321456172.0U
Authority: CN
Inventors: 程源洪; 王婉萍; 秦晓磊; 郭强; 赵开北; 张晓凯
Original assignee: China Petroleum and Chemical Corp
Current assignee: China Petroleum and Chemical Corp
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2024-04-19
Anticipated expiration: 2033-06-08

Abstract

The utility model belongs to the technical field of steam condensing valves, and particularly provides a condensation discharging valve and an instrument pressure guiding pipe. The valve body is provided with an inlet, an outlet and a liquid accommodating cavity, the inlet is provided with a connecting joint for connecting a pressure guiding pipe of an instrument, a front valve is arranged in front of the inlet and the liquid accommodating cavity and comprises a front valve core for controlling the opening and closing of the inlet and the liquid accommodating cavity, a rear valve is arranged between the outlet and the liquid accommodating cavity and comprises a rear valve core for controlling the opening and closing of the liquid accommodating cavity and the outlet. The instrument pressure guiding pipe comprises the condensation discharging valve. When the utility model is used, the front valve is opened, and the liquid in the meter pressure guide pipe enters the liquid accommodating cavity of the condensation discharge valve under the action of gravity. When the liquid containing cavity is about to be filled, the front valve is closed, the rear valve is opened, and the condensate in the liquid containing cavity is discharged from the outlet, so that the gas pressure in the pressure guiding pipe is not influenced, and the reliability of the meter pressure guiding pipe for condensation discharging and on-line maintenance is improved.

Description

Drainage and condensation valve and instrument pressure guiding pipe

Technical Field

The utility model belongs to the technical field of steam condensing valves, and particularly relates to a condensation discharging valve and an instrument pressure guiding pipe.

Background

In chemical production equipment, the large-scale compressor unit instrument is a large number, and the installation positions are scattered. In order to facilitate centralized monitoring and maintenance, the remote transmission meters of the unit are installed on an on-site meter cabinet in a centralized manner, wherein a remote transmission pressure gauge for measuring gas pressure and a remote transmission pressure difference gauge need to guide a measured medium to the meter cabinet through a pressure guiding pipe. For concentrated installation, the instrument cabinets are often placed on a lower, easily observable platform, which results in an unavoidable U-bend in the pressure tube. Meanwhile, due to the fact that the pressure guiding pipe is not in place in heat preservation and heating measures, liquid is carried in gas and the like, the situation that pressure or pressure difference is inaccurate due to liquid accumulation of the pressure guiding pipe in the production process sometimes occurs. When the unit is operated, if the liquid is discharged directly through the pressure gauge condensation valve, the remote transmission number is easily distorted, and the interlocking stop is easily triggered. Condensate is discharged through a temporary bypass interlocking mode, pressure fluctuation in the pressure guiding pipe is easy to cause, and unit operation risk is increased.

Disclosure of utility model

The utility model aims to provide a drainage valve to solve the technical problem that drainage reliability of an instrument pressure guide pipe in the prior art is poor. The utility model also aims to provide the instrument pressure guiding pipe with the condensation draining valve so as to solve the same technical problems.

In order to achieve the above purpose, the technical scheme of the condensation valve provided by the utility model is as follows:

The utility model provides a row congeals valve, includes the valve body, and the valve body is equipped with import, export and liquid and holds the chamber, the import is equipped with the attach fitting that is used for connecting the instrument to draw the pressure pipe to be equipped with preceding valve before import and liquid hold the chamber, preceding valve is including the preceding case that is used for controlling import and liquid to hold the switching in chamber, export and liquid hold and be equipped with back valve between the chamber, back valve is including the back case that is used for controlling the switching in liquid and export to hold the chamber.

The beneficial effects are that: the utility model provides a condensation draining valve which can be used for an instrument pressure guiding pipe. When the device is used, the condensation draining valve can be connected to the lower part of the meter pressure guiding pipe through the three-way joint, the front valve is kept open, liquid in the meter pressure guiding pipe enters the liquid accommodating cavity of the condensation draining valve under the action of gravity, and inaccurate pressure or pressure difference caused by accumulated liquid in the pressure guiding pipe is avoided. When the liquid containing cavity is about to be filled, the front valve is closed, the rear valve is opened, condensate in the liquid containing cavity is discharged from the outlet, no influence is caused to the gas pressure in the pressure guiding pipe at the moment, and the reliability of the meter pressure guiding pipe condensation discharging and on-line maintenance is improved.

As a further improvement, the valve body is further provided with a viewing window for viewing the liquid level in the liquid containing chamber.

The beneficial effects are that: the liquid level of the liquid accommodating cavity is observed through the observation window, so that accurate drainage and condensation can be realized, and the liquid drainage can be ensured.

As a further improvement, the viewing window is provided on the same side of the front and rear valves.

The beneficial effects are that: the valve is convenient for the staff to adjust while observing.

As a further improvement, the viewing window is provided between the front valve and the rear valve.

The beneficial effects are that: the liquid level in the middle of the liquid accommodating cavity is convenient to observe, and excessive overflow of liquid is avoided.

As a further improvement, the viewing window comprises pressure-resistant glass.

The beneficial effects are that: the pressure-resistant glass has high light transmittance and high wear resistance, and the reliability of the condensation valve is improved.

As a further improvement, the rear valve comprises a rotary rear valve rod, and the rear valve core is arranged at the end part of the rear valve rod.

The beneficial effects are that: the front valve rod and the valve body or a fixing piece connected with the valve body form a screw nut mechanism, and compared with a pressing type valve core, the structure is more stable.

As a further improvement, the rear valve further includes a rear bonnet for fixed engagement with the rear valve stem.

The beneficial effects are that: the hand-held rotation of the staff is facilitated.

As a further improvement, the connecting joint comprises a connecting pipe, one end of the connecting pipe is used for being connected with the valve body, and the other end of the connecting pipe is used for being connected with the instrument pressure guiding pipe.

The beneficial effects are that: the connection universality of the condensation discharge valve is improved.

As a further improvement, the outlet is also connected with a liquid discharge pipe.

The beneficial effects are that: is convenient to be connected with the liquid storage tank through the liquid discharge pipe.

In order to achieve the above purpose, the technical scheme of the instrument pressure guiding tube provided by the utility model is as follows:

The utility model provides a meter draws and presses pipe, is including the link that is used for connecting process piping and the instrument end that is used for connecting the instrument, and the lower part of this meter connecting pipe is connected with the row's congeals the valve through three way connection, and row's congeals the valve and includes the valve body, and the valve body is equipped with import, export and liquid and holds the chamber, the import is equipped with the attach fitting that is used for connecting the meter and draws and press the pipe to be equipped with preceding valve before import and liquid hold the chamber, preceding valve is including the preceding case that is used for controlling import and liquid to hold the opening and closing of chamber, be equipped with back valve between export and the liquid hold the chamber, back valve is including the back case that is used for controlling the opening and closing of liquid hold chamber and export.

The beneficial effects are that: the utility model improves the instrument pressure guiding tube in the prior art. When the device is used, the condensation draining valve is connected to the lower part of the meter pressure guiding pipe through the three-way joint, the front valve is kept open, liquid in the meter pressure guiding pipe enters the liquid accommodating cavity of the condensation draining valve under the action of gravity, and inaccurate pressure or pressure difference caused by accumulated liquid in the pressure guiding pipe is avoided. When the liquid containing cavity is about to be filled, the front valve is closed, the rear valve is opened, condensate in the liquid containing cavity is discharged from the outlet, no influence is caused to the gas pressure in the pressure guiding pipe at the moment, and the reliability of the meter pressure guiding pipe condensation discharging and on-line maintenance is improved.

Drawings

FIG. 1 is a cross-sectional view of a construction of an embodiment 1 of a purge valve according to the present utility model;

FIG. 2 is a schematic view showing the use state of the embodiment 1 of the dephlegmator valve according to the present utility model.

Reference numerals illustrate:

1. A connecting pipe; 2. a front valve; 3. a valve body; 4. a liquid containing chamber; 5. an observation window; 6. a rear valve; 7. a liquid discharge pipe; 8. a process pipe; 9. a pressure guiding pipe; 10. a discharge valve; 11. a meter; 12. an instrument cabinet; 21. a front bonnet; 22. a front valve stem; 23. a front gland; 24. a front stabilizing sleeve; 25. a front valve core; 31. a front valve seat; 32. a rear valve seat; 51. pressure-resistant glass; 52. a threaded connection; 61. a rear bonnet; 62. a rear valve stem; 63. a rear gland; 64. a rear stabilizing sleeve; 65. and a rear valve core.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

It is noted that relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" or the like is not excluded from a process, method, or the like that includes the element.

In the description of the present utility model, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; either directly, indirectly through intermediaries, or in communication with the interior of the two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "provided" may be interpreted broadly, and for example, an object "provided" may be a part of a body, may be separately disposed from the body, and may be connected to the body, where the connection may be a detachable connection or an undetachable connection. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.

The present utility model is described in further detail below with reference to examples.

Specific example 1 of a dephlegmator valve provided by the utility model:

as shown in fig. 1 and 2, the valve 10 provided in this embodiment includes a valve body 3, where the valve body 3 has an inlet, an outlet, and a liquid accommodating cavity 4, and the inlet is provided with a connection joint for connecting with a pressure guiding pipe 9, specifically, the connection joint in this embodiment is a connection pipe 1, and the valve 10 can be welded or screwed with the pressure guiding pipe 9 through the connection pipe 1. A front valve 2 (defined as front near the inlet) for controlling the opening and closing of the inlet and the liquid containing chamber 4 is arranged between the inlet and the liquid containing chamber 4. Specifically, in the present embodiment, the front valve 2 includes a front valve stem 22 and a front valve spool 25 provided at an end of the front valve stem 22, the front valve spool 25 being in sealing engagement with a front valve seat 31 in the valve body 3. The front valve rod 22 is a rotary valve rod, and is provided with threads on the periphery thereof, and can form a screw nut mechanism with the valve body 3 or with a fixed connecting piece arranged on the valve body 3. The front valve rod 22 is connected with a front valve cap 21 through a front gland 23, and the front valve cap 21 can be rotated by holding the front valve cap 21. In order to improve the rotation stability of the front valve rod 22, a front stabilizing sleeve 24 is sleeved outside the front valve rod 22. A rear valve 6 for controlling the opening and closing of the liquid containing cavity 4 and the outlet is arranged between the outlet and the liquid containing cavity 4. Specifically, in the present embodiment, the rear valve 6 includes a rear valve stem 62 and a rear valve spool 65 provided at an end of the rear valve stem 62, and the rear valve spool 65 is in sealing engagement with the rear valve seat 32 in the valve body 3. The rear valve rod 62 is the same as the front valve 2, the rear valve 6 comprises a rear valve cap 61, a rear gland 63 and a rear stabilizing sleeve 64, and the connection relation and the function of each part are consistent with those of the front valve 2, and are not repeated.

In this embodiment, the valve body 3 is further provided with an observation window 5, and the observation window 5 is used for observing the liquid level in the liquid accommodating chamber 4. Specifically, the observation window 5 includes a pressure-resistant glass 51, and the pressure-resistant glass 51 is connected to the valve body 3 via a screw 52. The screw 52 may be a screw cylinder having an external screw, and the pressure-resistant glass 51 is adhered to an end of the screw 52. The pressure-resistant glass 51 has good wear resistance and light transmittance, and improves reliability. And meanwhile, the threaded connection is convenient to disassemble and assemble. Of course, the observation window 5 may be directly adhered to the outside of the valve body 3.

Further, the observation window 5 is on the same side as the front valve 2 and the rear valve 6, so that a worker can conveniently observe the valves in general, and the efficiency is improved. Specifically, the observation window 5 is arranged between the front valve 2 and the rear valve 6, so that the liquid level in the middle of the liquid accommodating cavity 4 can be observed conveniently, and excessive liquid overflow from the front valve 2 is avoided. Of course, in other embodiments, the observation window may be disposed on the opposite side of the front valve 2 and the rear valve 6, or may be disposed above the front valve 2, which may also play a role in observation.

The dephlegmator valve 10 is connected in use to the lower part of the pressure guiding tube 9 by means of a three-way connection (not shown in the figures). The pressure guiding pipe 9 has one end for connection with the process pipe 8 (equipment pipe) and one end for connection with the meter 11 in the meter cabinet 12. During normal use, the front valve 2 is opened, and the condensate in the pressure guiding pipe 9 of the rear valve 6 is closed to fall into the liquid accommodating cavity 4 of the condensate discharging valve 10 under the action of gravity. The liquid level of the liquid accommodating cavity 4 is observed through the observation window 5, when the liquid accommodating cavity is filled, the front valve 2 is closed, the rear valve 6 is opened, and the condensate in the liquid accommodating cavity 4 flows out from the outlet to finish discharging. Compared with the prior art, the embodiment realizes the collection and discharge of the condensate in the pressure guiding pipe 9, and has no influence on the pressure in the pressure guiding pipe 9 during the collection and discharge, thereby being safe and reliable. In order to facilitate the connection of the storage tank for recovering liquid, the outlet of the valve body 3 in this embodiment is further provided with a drain pipe 7.

The specific embodiment 2 of the valve provided by the utility model is mainly different from embodiment 1 in that: in embodiment 1, the front valve 2 and the rear valve 6 are both rotary hand valves. In the present embodiment, one of the front valve 2 and the rear valve 6 is a point-pressure type solenoid valve or both are point-pressure type solenoid valves.

The specific embodiment 3 of the valve provided by the utility model is mainly different from embodiment 1 in that: in embodiment 1, the valve body 3 is provided with an observation window including pressure-resistant glass. In the present embodiment, the liquid level of the liquid containing chamber 4 of the valve body 3 may be measured by an ultrasonic sensor, excluding the observation window.

The specific embodiment 4 of the valve provided by the utility model is mainly different from embodiment 1 in that: in embodiment 1, a connecting pipe 1 is connected to the inlet of a valve body 3. In this embodiment, the inlet of the valve body 3 is not provided with the connection pipe 1, and the inlet end of the valve body 3 directly forms an inlet joint for connecting the pressure guiding pipe.

Specific embodiments of the instrument pressure guiding tube in the utility model:

The meter pressure guiding pipe, that is, the pressure guiding pipe in the embodiment 1 of the above-mentioned discharge valve, further includes the discharge valve described in any one of the embodiments of the above-mentioned discharge valves 1 to 4, and will not be described in detail here.

It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited to the above-mentioned embodiments, but may be modified without inventive effort or equivalent substitution of some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a arrange congeal valve, includes the valve body, and the valve body is equipped with import, export and liquid and holds the chamber, its characterized in that, the import is equipped with the attach fitting that is used for connecting the instrument to draw the pressure pipe to be equipped with preceding valve before import and liquid hold the chamber, preceding valve is including the preceding case that is used for controlling import and liquid to hold the opening and closing of chamber, be equipped with back valve between export and the liquid and hold the chamber, back valve is including the back case that is used for controlling the opening and closing of liquid holding chamber and export.

2. The valve of claim 1, wherein the valve body is further provided with a viewing window for viewing the liquid level in the liquid containing chamber.

3. The valve of claim 2, wherein the viewing window is provided on the same side of the front and rear valves.

4. A valve according to claim 3, wherein the viewing window is provided between the front valve and the rear valve.

5. The dephlegmator valve of any of claims 2-4, wherein the viewing window comprises pressure resistant glass.

6. The valve according to any one of claims 1-4, wherein the rear valve comprises a rotatable rear valve stem, the rear valve spool being provided at an end of the rear valve stem.

7. The valve of claim 6, wherein the rear valve further comprises a rear bonnet for secure engagement with the rear valve stem.

8. The valve according to any one of claims 1 to 4, wherein the connection joint comprises a connection pipe having one end for connection with the valve body and the other end for connection with the meter pilot pipe.

9. The valve according to any one of claims 1 to 4, wherein the outlet is further connected to a drain.

10. An instrument pressure guiding pipe comprising a connecting end for connecting a process pipeline and an instrument end for connecting an instrument, wherein the lower part of the instrument pressure guiding pipe is connected with the condensation valve of any one of claims 1-9 through a three-way joint.