Temperature and pressure reducing valve for heat supply
By adopting a folded guide plate and a multi-stage disc stacked structure in the desuperheating and pressure reducing valve for heating, the problems of single-point high-pressure impact and high noise under high temperature and high pressure are solved, achieving reduced flow rate, reduced noise and extended service life, and meeting the requirements of high sealing performance and large flow rate.
Patent Information
- Application Number
- CN202520394359.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing spring-loaded desuperheating and pressure-reducing valves for heating systems suffer from problems such as large single-point high-pressure impact, easy cavitation and flash evaporation, high noise, difficulty in meeting high sealing requirements, and short service life under high-temperature and high-pressure conditions.
It adopts a folded guide plate and a multi-stage disk stacked structure to achieve energy dispersion by changing the flow direction, cross-sectional area and flow velocity multiple times. It combines the diameter and gap of the large and small holes for expansion and decompression and is designed as a bidirectional conveying form to enhance the overall strength.
It effectively reduces flow velocity by 30%-50%, prevents cavitation and flash evaporation, reduces operating noise by 30%, extends valve life, and enhances its ability to withstand high temperatures and pressures, meeting the needs of large flow rates.
Smart Images
Figure CN223908894U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to temperature reducing pressure reducing valve technical field especially relates to heat -supply temperature reducing pressure reducing valve. BACKGROUND
[0002] The working principle of temperature reducing pressure reducing valve is through changing the opening of opening and closing part, the pressure of medium is reduced, and the opening of opening and closing part is adjusted with the help of the pressure behind the valve, so that the pressure behind the valve is kept in a certain range. The temperature of medium can be reduced by spraying cooling water in the valve body or behind the valve. This valve is widely used in the occasions that need to adjust the flow, pressure and temperature of medium, such as power, chemical industry, pharmacy and other fields.
[0003] At present, the spring type temperature reducing pressure reducing valve for heat supply all adopts integral structure, which usually adopts double seat balance structure, although the length of the device is shortened, but the leakage is usually level II (part can reach level III), it is difficult to meet the scene of high sealing requirement, under high temperature and high pressure working condition, the stability and service life of integral valve will decrease, the bearing capacity of high temperature and high pressure decreases, therefore, we put forward the temperature reducing pressure reducing valve for heat supply to solve the above problems. CONTENT OF THE UTILITY MODEL
[0004] The utility model discloses a temperature reducing pressure reducing valve for heat supply, which solves the problems of single-point high-pressure impact, cavitation and flashing, and high operating noise in the prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] The temperature reducing pressure reducing valve for heat supply comprises a conveying pipe, two shunt pipes connected to one end of the conveying pipe, a fixed pipe connected between the two shunt pipes, an output pipe connected to one end of the fixed pipe, two pressure reducing pipes installed on the fixed pipe, a sealing mechanism installed in the pressure reducing pipes, and a pressure reducing device connected to one end of the sealing mechanism.
[0007] Preferably, the sealing structure comprises a valve core arranged in the pressure reducing pipe, a spring connected to one side of the valve core, a sealing head connected to one end of the spring, conveying channels arranged on both sides of the pressure reducing pipe, and the sealing head corresponding to the conveying channels.
[0008] Preferably, a conveying head is connected to the bottom of the pressure reducing pipe, and a plurality of conveying holes are equidistantly arranged on the conveying head.
[0009] Preferably, two closed valve bodies are installed on the shunt pipe.
[0010] Preferably, the pressure reducing device comprises a first connecting head abutting the lower end of the sealing head, and a plurality of small conveying holes are equidistantly arranged on the first connecting head.
[0011] Preferably, the lower end of the first connector is in contact with a third connector, and a plurality of large conveying holes are equidistantly arranged on the third connector.
[0012] Preferably, the lower end of the third connector is in contact with a second connector, and a plurality of folded flow guide plates are fixed equidistantly in the second connector.
[0013] In the utility model, when needing to use, high temperature and high pressure water is sent into the shunt pipe from the conveying pipe, then reaches two pressure reducing pipes, and the flow rate is reduced after sequentially passing through the conveying hole, the folded flow guide plate, the large conveying hole and the small conveying hole, is sent into the output pipe through the conveying channel for output, the pressure reducing pipe is composed of multiple layers of disc pieces and size hole paths, each layer is designed with a tiny step hole and a curved path, when the fluid passes through step by step, energy dispersion is realized by changing the flow direction, the cross section and the flow rate multiple times, single point high pressure impact is avoided, the flow rate can be reduced by 30%-50% through the 3 rings, cavitation and flashing are effectively prevented, in addition, the gas medium realizes expansion and pressure reduction through the size hole diameter and the gap, the operation noise can be controlled below 85dB, which is 30% better than the traditional valve.
[0014] The utility model has the following advantages:
[0015] 1. The form that the folded flow guide plate and the multistage disc piece are superposed is adopted, energy dispersion is realized by changing the flow direction, the cross section and the flow rate multiple times, single point high pressure impact is avoided, the flow rate is greatly reduced, and the service life of the valve is improved.
[0016] 2. The gas medium realizes expansion and pressure reduction through the size hole diameter and the gap, the high pressure safety risk is greatly reduced, and the operation noise can be reduced.
[0017] 3. Through the form of bidirectional conveying, the conveying bearing force of high temperature and high pressure hot water is greatly improved, and the overall strength is enhanced.
[0018] In conclusion, the utility model solves the problems of short service life, large noise and difficult maintenance of the traditional valve under high pressure difference working condition through the innovation of graded energy dissipation, avoids single point high pressure impact, greatly reduces the flow rate, improves the service life of the valve, greatly reduces the high pressure safety risk, and can also reduce the operation noise, and the form of bidirectional conveying meets the demand of large flow. ACCURACY OF DRAWINGS
[0019] Figure 1 It is a structure diagram of the utility model;
[0020] Figure 2 It is an internal structure diagram of the pressure reducing pipe of the utility model;
[0021] Figure 3 It is a folded flow guide plate setting structure diagram of the utility model;
[0022] Figure 4 The large conveying hole setting structure diagram of the utility model;
[0023] Figure 5 The small conveying hole setting structure diagram of the utility model.
[0024] In the figure: 1 shunt pipe, 2 conveying pipe, 3 output pipe, 4 pressure reducing pipe, 5 conveying passage, 6 first connecting head, 7 conveying hole, 8 second connecting head, 9 third connecting head, 10 sealing head, 11 spring, 12 small conveying hole, 13 large conveying hole, 14 folded flow guide plate, 15 closed valve body. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0026] Referring to Figures 1-5 The heat supply temperature and pressure reducing valve includes a conveying pipe 2, two shunt pipes 1 are connected to one end of the conveying pipe 2, the conveying capacity of high-temperature and high-pressure hot water is greatly improved in a bidirectional conveying mode, the overall strength is enhanced, and large flow requirements are met; one fixed pipe is connected between the two shunt pipes 1, one output pipe 3 is connected to one end of the fixed pipe, two pressure reducing pipes 4 are installed on the fixed pipe, a sealing mechanism is installed in the pressure reducing pipe 4, the sealing mechanism includes a valve core arranged in the pressure reducing pipe 4, one side in the valve core is connected to a spring 11, one end of the spring 11 is connected to a sealing head 10, conveying passages 5 are arranged on both sides in the pressure reducing pipe 4, the sealing head 10 corresponds to the conveying passages 5, the spring 11 is used to automatically reduce pressure output in a pressure reducing mode, stability is ensured, cobalt-based alloy is built up on the surface of the sealing head 10, and high-temperature resistance and erosion resistance are improved;
[0027] One end of the sealing mechanism is connected to a pressure reducing device, the pressure reducing device includes a first connecting head 6 abutting against the lower end of the sealing head 10, a plurality of small conveying holes 12 are arranged at equal intervals on the first connecting head 6, the lower end of the first connecting head 6 abuts against a third connecting head 9, a plurality of large conveying holes 13 are arranged at equal intervals on the third connecting head 9, the lower end of the third connecting head 9 abuts against a second connecting head 8, a plurality of folded flow guide plates 14 are fixed at equal intervals in the second connecting head 8, the three connecting heads are made of ceramic coating or composite material, the wear of the valve body by the medium is reduced, the service life of the valve is prolonged, the flow rate can be reduced by 30%-50% through the three-stage connecting head ring, air erosion and flashing are effectively prevented, the multi-stage pressure reducing structure reduces the steam flow rate, and energy loss in the throttling process is reduced;
[0028] Three connectors can be customized for different working conditions level (3-7 level) and aperture (0.5-5mm), adapt pressure range 0.1-25MPa, can be according to the need to choose the form and number of connector settings, in addition to the gas medium through the size hole diameter and gap to realize the expansion pressure reduction, the running noise can be controlled below 85dB, 30% better than the traditional valve;
[0029] The bottom of the pressure reducing pipe 4 is connected with a conveying head, a plurality of conveying holes 7 are arranged on the conveying head at equal intervals, two closed valve bodies 15 are installed on the shunt pipe 1, energy dispersion is realized by changing flow direction, cross-sectional area and flow velocity multiple times, single-point high-pressure impact is avoided, the closed valve body 15 is manually closed in an emergency, and the safety during use is improved.
[0030] When the utility model needs to be used, high-temperature and high-pressure water is sent into the shunt pipe 1 from the conveying pipe 2, then reaches the two pressure reducing pipes 4, and then sequentially passes through the conveying hole 7, the folding flow guide plate 14, the large conveying hole 13 and the small conveying hole 12, and then the flow velocity is reduced, the conveying channel 5 is used to send the water into the output pipe 3 for output, the pressure reducing pipe 4 is composed of multiple layers of disc plates and size hole paths, each layer is designed with a tiny stepped hole and a curved path, when fluid passes through step by step, energy dispersion is realized by changing flow direction, cross-sectional area and flow velocity multiple times, single-point high-pressure impact is avoided, the flow velocity can be reduced by 30%-50% through the three rings, cavitation and flashing are effectively prevented, in addition, the gas medium is expanded and decompressed through the size hole diameter and the gap, the running noise can be controlled below 85dB, and the utility is 30% better than the traditional valve.
[0031] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all of them should be covered in the protection scope of the utility model.
Claims
1. A desuperheating and pressure reducing valve for heating, comprising a delivery pipe (2), characterized in that, One end of the delivery pipe (2) is connected to two branch pipes (1), and a fixed pipe is connected between the two branch pipes (1). One end of the fixed pipe is connected to an output pipe (3). Two pressure reducing pipes (4) are installed on the fixed pipe. A sealing mechanism is installed inside the pressure reducing pipe (4). One end of the sealing mechanism is connected to a pressure reducing device.
2. The desuperheating and pressure-reducing valve for heating according to claim 1, characterized in that: The sealing mechanism includes a valve core disposed in a pressure reducing pipe (4), a spring (11) connected to one side of the valve core, a sealing head (10) connected to one end of the spring (11), and a conveying channel (5) provided on both sides of the pressure reducing pipe (4), with the sealing head (10) and the conveying channel (5) corresponding to each other.
3. The heating desuperheating and pressure reducing valve according to claim 1, characterized in that: The bottom of the pressure reducing pipe (4) is connected to a conveying head, and the conveying head is provided with multiple conveying holes (7) at equal intervals.
4. The desuperheating and pressure-reducing valve for heating according to claim 1, characterized in that: Two shut-off valve bodies (15) are installed on the diversion pipe (1).
5. The desuperheating and pressure-reducing valve for heating according to claim 2, characterized in that: The pressure reducing device includes a first connector (6) that abuts against the lower end of the sealing head (10), and the first connector (6) is provided with a plurality of small conveying holes (12) at equal intervals.
6. The desuperheating and pressure-reducing valve for heating according to claim 5, characterized in that: The lower end of the first connector (6) abuts against the third connector (9), and the third connector (9) is provided with a plurality of large conveying holes (13) at equal intervals.
7. The desuperheating and pressure-reducing valve for heating according to claim 6, characterized in that: The lower end of the third connector (9) abuts against the second connector (8), and multiple folding guide plates (14) are fixed at equal intervals inside the second connector (8).