KR-102963889-B1 - A steam trap

Abstract

The present invention relates to a steam trap, the purpose of which is to reliably prevent the plug from becoming loose or detached from the nozzle-installation pipe by modifying the fastening structure of the nozzle, the installation pipe, and the plug, and by providing a means to prevent the plug from loosening. The configuration comprises a steam trap in which a nozzle is installed with multiple nozzle holes of different diameters, and which discharges condensate collected inside the steam trap through which steam passes to the outside through selected nozzle holes of the nozzle. The steam trap comprises: a steam inlet pipe section connected to a steam connection pipe on the side of a valve body; and a condensate discharge pipe section connected to a condensate discharge pipe on the opposite side of the steam inlet pipe section. A circular guide groove is formed recessed on the inner bottom surface of the upper part of the valve body between the steam inlet pipe section and the condensate discharge pipe section for the installation of a nozzle, wherein a screw fastening groove is formed in the center of the guide groove, a condensate discharge hole communicating with the condensate discharge pipe section is formed on one side of the screw fastening groove, a condensate discharge passage is formed on the inner bottom surface extending from the guide groove, and a nozzle installation pipe section having a female screw section formed on its inner diameter; a stopper fastened to the female screw section of the nozzle installation pipe section to seal the interior where the nozzle is installed; and a steam discharge pipe section is composed of a steam inlet chamber formed in the lower part of the valve body between the steam inlet pipe section and the condensate discharge pipe section communicating with the steam inlet pipe section, wherein a condensate inlet passage communicating with the condensate discharge passage of the nozzle installation pipe section is formed on the side of the steam inlet chamber, and a strainer for sludge filtration is interposed in the steam inlet chamber and connected to a steam discharge pipe. The nozzle installation pipe is characterized by having a male screw portion on its outer surface, and the plug is a cylindrical shape with an open bottom surface, and is characterized by having a spanner assembly portion protruding on the upper surface, a female screw portion formed along the inner surface, a bolt hole formed through the outer surface, and a stopping bolt that is detachably screw-assembled with the bolt hole to prevent the plug from loosening.

Inventors

• 남상기

Dates

Publication Date

20260511

Application Date

20231201

Claims (1)

1. In a steam trap in which a nozzle (20) is installed having a plurality of nozzle holes (22) of different diameters each, so as to discharge condensate collected inside the steam trap through which steam passes to the outside through selected nozzle holes of the nozzle, The above steam trap is, A steam inlet pipe section (11) connected to a steam connection pipe on the side of the valve body (10); a condensate discharge pipe section connected to a condensate discharge pipe on the opposite side of the steam inlet pipe section (11); and a nozzle installation pipe section (13) having a circular guide groove (13a) formed in the inner bottom surface for mounting a nozzle (20) on the upper part of the valve body (10) between the steam inlet pipe section (11) and the condensate discharge pipe section, wherein a screw fastening groove (13b) is formed in the center of the guide groove (13a), a condensate discharge hole (13c) communicating with the condensate discharge pipe section (12) is formed on one side of the screw fastening groove (13b), a condensate discharge passage (13d) is formed on the inner bottom surface extending out of the guide groove (13a), and a female screw section (13e) is formed in the inner diameter; A plug (14) that is fastened to the female threaded portion (13e) of the nozzle installation pipe portion (13) to seal the interior where the nozzle (20) is installed; and a steam inlet chamber formed in the lower part of the valve body (10) between the steam inlet pipe portion (11) and the condensate discharge pipe portion (12) that communicates with the steam inlet pipe portion, wherein a condensate inlet passage is formed in the lateral direction where the steam inlet chamber is formed and communicates with the condensate discharge passage (13d) of the nozzle installation pipe portion (13), and a steam discharge pipe portion (16) that is connected to the steam discharge pipe and has a strainer (15) for sludge filtration interposed in the steam inlet chamber; The above nozzle installation pipe section (13) is, A male screw portion (13g) is provided on the outer surface, The above stopper (14) is, A steam trap characterized by having a cylindrical shape with an open bottom surface, a spanner assembly part (14a) protruding on the top surface, a female screw part (14b) formed along the inner circumference, a bolt hole (14c) formed through the outer circumference, and a stopping bolt (14d) that is detachably screw-assembled with the bolt hole (14c) to prevent the plug (14) from loosening.

Description

A steam trap The present invention relates to a steam trap, and more specifically, to a steam trap having a structure that prevents the connection between the nozzle installation pipe part and the plug from becoming loose due to the vacuum of the steam pipe, thereby reliably preventing steam leakage and loss of function of the steam trap. Generally, high-temperature, high-pressure steam is transported within steam pipes that use steam as a heat source, such as heating radiators, reactors, paper dryers, tracing piping in the petrochemical industry, hospital sterilizers, and piping networks of heat and cold generators; consequently, condensate is inevitably generated and accumulates within these steam pipes. Since condensate in the steam pipe significantly degrades the performance of the system, in order to prevent the degrade of system performance, the condensate generated in the steam pipe must be discharged quickly, and a steam trap is installed in the appropriate place in the steam pipe to discharge the condensate in the steam pipe. In other words, the steam trap is used to discharge condensate generated when steam condenses within a steam space, such as a steam main or heat exchanger, of a production facility that uses steam. A nozzle is built into this steam trap to discharge the collected condensate to the outside. The nozzle of a conventional steam trap is a round rod having a threaded section along its outer surface, with a nozzle hole having a diameter formed vertically through the center, and the structure is such that condensate is discharged to the outside through the nozzle hole. However, conventional steam trap nozzles as described above have only one nozzle through-hole in the center, and since the amount of condensate collected in the steam trap varies greatly depending on the operating condition of the system, in order to discharge the collected condensate at an appropriate speed, the nozzle must be replaced with a nozzle having a nozzle through-hole of a diameter suitable for each situation. Consequently, the operator must carry all nozzles equipped with nozzle through-holes of different diameters while performing the work, which makes carrying multiple nozzles cumbersome and significantly reduces work productivity. In order to resolve the above-mentioned problems, the applicant has registered Korean Patent No. 10-1900698 (Title: Nozzle for Steam Trap, Date of Publication: September 20, 2018, hereinafter referred to as the 'Patent Document'). The above patent document describes a nozzle for a steam trap that is embedded in a nozzle assembly hole within a steam trap and discharges condensate collected within the steam trap to the outside. The nozzle is characterized by having a plurality of nozzle holes formed vertically with different diameters and having a threaded portion formed along the inner surface of the upper portion; and an opening/closing screw assembled to the upper portion of the nozzle holes to open and close the nozzle holes. This configuration allows a single nozzle to have a plurality of nozzle holes with different diameters and enables the selection and opening of only one nozzle hole of a suitable diameter among the plurality of nozzle holes, thereby allowing work to be performed without the need to carry a replacement nozzle separately, making work easier and significantly improving work productivity. However, although the above nozzle allows for the discharge of condensate through the unfastened parts by individually fastening multiple opening/closing screws, the process of unnecessarily fastening the screws according to the number of nozzles requires performing the work of fastening each screw individually. This resulted in problems such as increased product costs due to the increase in the number of parts and defects in the fastening parts. The applicant made various efforts to overcome the aforementioned conventional problems, and as a result, filed a patent application with the Korean Intellectual Property Office on August 8, 2019, under the name "Steam Trap" and was granted Patent Application No. 10-2019-0096633, and developed Registered Patent No. 10-2208162 (hereinafter referred to as the "prior registered invention") on January 21, 2021. FIG. 1 is a perspective view showing the internal configuration of a steam trap according to a prior art invention separated. Referring to FIG. 1, the configuration of a steam tram according to the prior art invention comprises: a steam inlet pipe section (11) connected to a steam connection pipe (1) on the side of a valve body (10); and a condensate discharge pipe section (12) connected to a condensate discharge pipe (2) on the opposite side of the steam inlet pipe section (11); A circular guide groove (13a) is formed in the inner bottom surface of the upper part of the valve body (10) between the steam inlet pipe (11) and the condensate discharge pipe (12) for the installation of a nozzle (20), wherein a screw fastening groove