Thermal power unit deep peak regulation stability control device

Abstract

The utility model belongs to the thermal power generation technical field, specifically is thermal power generating unit depth peak shaving stability control device, including valve body and pressure gauge body, both sides of valve body all are provided with the access hole, the pressure gauge body is located the inside in access hole, all be provided with locking plate at the port department of access hole, one side of locking plate all is fixedly connected with connecting rod, the pressure gauge body fixed mounting in the end of connecting rod, the outer surface of access hole is provided with the plastic sleeve ring of sleeve joint, through being provided with hoop unit, plastic sleeve ring and connecting rod, use upper snap ring and lower snap ring and fix plastic sleeve ring on access hole, fix plastic sleeve ring, because the pressure gauge body is directly connected on locking plate through connecting rod, take down locking plate can together with pressure gauge body from access hole, convenient and fast take out pressure gauge body and overhaul, solved the problem that existing device is inconvenient to take out pressure gauge body from the inside of access hole and overhaul.

Description

Technical Field

[0001] This utility model belongs to the field of thermal power generation technology, specifically a deep peak shaving and stabilization device for thermal power units. Background Technology

[0002] Thermal power units supply heat using medium-pressure steam and low-pressure steam. Medium-pressure steam is supplied by mixing main steam and reheat steam using a pressure matcher, while low-pressure steam is supplied by reducing the temperature and pressure of reheat steam. To meet the heating needs of users, power plant units mainly use steam extracted from the main steam for external heating. The main steam drives a back-pressure turbine, which exhausts high-pressure steam for external heating. By connecting the outlet of the back-pressure turbine to a modified medium-pressure combined steam valve, the scheduling of high-pressure steam is controlled, achieving energy conservation and emission reduction.

[0003] CN119713239B discloses a deep peak-shaving device for thermal power units, including a medium-pressure combined steam valve for regulating steam output. The vertical part of the valve body has an inspection port along a direction perpendicular to its axis. The inspection port passes through the regulating flow channel. Locking plates are fixedly installed at both ends of the inspection port. A pressure gauge for detecting the gas pressure in the inspection port pipeline is fixedly installed inside the inspection port. By monitoring the steam pressure in the inspection port through the pressure gauge, the sealing condition between the valve seat and the steam flow channel and the regulating flow channel can be determined. This allows for the assessment of the valve seat's sealing performance under continuous use, thereby improving the timeliness of early warning for monitoring the safe and stable operation of thermal power units.

[0004] Existing technology monitors the steam pressure inside the maintenance port using a pressure gauge. Although this device can achieve stable control of the safe operation of thermal power units, the locking plate is fixed to the maintenance port and the pressure gauge is fixed inside the maintenance passage. When the pressure gauge is damaged, it is inconvenient to quickly remove the pressure gauge from inside the maintenance passage for maintenance. Therefore, a deep peak shaving and stabilization control device for thermal power units is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model proposes a deep peak shaving and stabilization control device for thermal power units.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The thermal power unit deep peak shaving and stabilization device of this utility model includes a valve body and a pressure gauge body; both sides of the valve body are provided with inspection ports, the pressure gauge body is located inside the inspection port, a locking plate is provided at the port of each inspection port, a connecting rod is fixedly connected to one side of each locking plate, the pressure gauge body is fixedly installed at the end of the connecting rod, a plastic collar is sleeved on the outer surface of the inspection port, the locking plate is fixedly installed on the inner wall of the plastic collar, a clamping unit is provided on the outer surface of each inspection port, the clamping unit includes an upper clamping ring and a lower clamping ring, a connecting member is provided between the upper clamping ring and the lower clamping ring, one end of the connecting member is movably installed with the upper clamping ring through a rotating shaft, the other end of the connecting member is movably installed with the lower clamping ring through a rotating shaft, and a fastening unit is provided at the end of the lower clamping ring away from the connecting member.

[0007] Preferably, a top end is welded and fixed to the top of the valve body, and a first flange is provided at the top of the top end. Fastening screws are evenly arranged through the outer side of the first flange, and all the fastening screws are threaded into the top end.

[0008] Preferably, steam channels are fixedly connected to both sides of the bottom of the valve body, and a second flange is welded and fixed to the outer surface of the steam channel. Threaded holes are evenly opened on the outer side of the second flange.

[0009] Preferably, the fastening unit includes a spherical end, which is rotatably mounted on the end of the lower retaining ring. A threaded rod is welded to the end of the spherical end, and a locking nut is threaded onto the outer surface of the threaded rod.

[0010] Preferably, support columns are welded and fixed on both sides of the bottom end of the valve body, the support columns are symmetrically arranged, and a connecting frame is welded between the support columns.

[0011] Preferably, a sealing gasket is fixedly installed on the outer surface of the plastic collar, and the sealing gasket is made of rubber.

[0012] Preferably, a first control lug is welded to one side of the locking nut, and a second control lug is welded to the other side of the locking nut.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model provides a deep peak shaving and stabilization control device for thermal power units. It includes a clamping unit, a plastic collar, and a connecting rod. The plastic collar is fitted onto the inspection port, and a locking plate seals the port. Upper and lower retaining rings secure the plastic collar to the inspection port. Since the pressure gauge body is directly connected to the locking plate via the connecting rod, during maintenance, the locking plate can be removed from the inspection port to bring the pressure gauge body out along with it. This facilitates quick and easy removal of the pressure gauge body for maintenance, solving the problem of existing devices making it inconvenient to quickly remove the pressure gauge body from the inspection port for maintenance.

[0015] 2. This utility model provides a deep peak shaving and stabilization control device for thermal power units. By setting a fastening unit, the threaded rod is controlled to be set vertically. Then, the locking nut is screwed onto the threaded rod. After the locking nut is tightened, the locking nut is tightly pressed against the end of the upper retaining ring. The locking nut can be controlled by the first control ear and the second control ear. The first control ear and the second control ear make it convenient for the operator to apply force to the locking nut, thus making it convenient to use. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a frontal perspective view of the structure of this utility model;

[0018] Figure 2 This is a three-dimensional view of the inspection port and locking plate in this utility model.

[0019] Figure 3 This is a perspective view of the fastening unit in this utility model;

[0020] Figure 4 This is a perspective view of the upper and lower retaining rings in this utility model;

[0021] Figure 5 This is a magnified perspective view of a portion of the structure at point A in this utility model;

[0022] Figure 6 This is a magnified perspective view of part B of the structure in this utility model.

[0023] Legend:

[0024] 110. Valve body; 111. Pressure gauge body; 112. Inspection port; 113. Locking plate; 114. Connecting rod; 115. Plastic collar; 116. Sealing gasket; 117. Top end; 118. No. 1 flange; 119. Fastening screw; 120. Steam flow channel; 121. No. 2 flange; 122. Threaded hole; 123. Support column; 124. Connecting frame; 200. Clamp unit; 210. Upper retaining ring; 211. Lower retaining ring; 212. Connecting piece; 300. Fastening unit; 310. Spherical end; 311. Threaded rod; 312. Locking nut; 313. No. 1 control ear; 314. No. 2 control ear. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Specific implementation examples are given below.

[0027] Please see Figure 1-6This utility model provides a deep peak shaving and stabilization control device for thermal power units, including a valve body 110 and a pressure gauge body 111. Inspection ports 112 are provided on both sides of the valve body 110. The pressure gauge body 111 is located inside the inspection port 112. A locking plate 113 is provided at the port of each inspection port 112. A connecting rod 114 is fixedly connected to one side of each locking plate 113. The pressure gauge body 111 is fixedly installed at the end of the connecting rod 114. A plastic collar 115 is fitted onto the outer surface of the inspection port 112. The locking plate 113 is fixedly installed on the inner wall of the plastic collar 115. A clamping unit 200 is provided on the outer surface of each inspection port 112. The clamping unit 200 includes an upper clamping ring 210 and a lower clamping ring 211. A connecting member 212 is provided between the upper clamping ring 210 and the lower clamping ring 211. One end of the connecting member 212 is connected to the upper clamping ring 210 via a rotating shaft. The connector 212 is movably installed at one end via a pivot and connected to the lower retaining ring 211. A fastening unit 300 is provided at the end of the lower retaining ring 211 furthest from the connector 212. When using this device, the plastic collar 115 is placed over the inspection port 112, and the locking plate 113 seals the port. The upper retaining ring 210 and the lower retaining ring 211 are used to secure the plastic collar 115 to the inspection port 112. Since the pressure gauge body 111 is directly connected to the locking plate 113 via the connecting rod 114, during maintenance, the locking plate 113 can be removed from the inspection port 112, allowing the pressure gauge body 111 to be pulled out of the inspection port 112 along with the locking plate 113. This facilitates quick and easy removal of the pressure gauge body 111 for maintenance, solving the problem of existing devices making it inconvenient to quickly remove the pressure gauge body 111 from the inspection channel for maintenance.

[0028] Furthermore, a top end 117 is welded and fixed to the top of the valve body 110. A first flange 118 is provided at the top of the top end 117. Fastening screws 119 are evenly arranged through the outer side of the first flange 118. All fastening screws 119 are threaded into the top end 117. The fastening screws 119 serve to fix the top end 117 and the first flange 118, so that the device can be used stably.

[0029] Furthermore, steam channels 120 are fixedly connected to both sides of the bottom of the valve body 110. A second flange 121 is welded and fixed to the outer surface of the steam channel 120. Threaded holes 122 are evenly opened on the outer side of the second flange 121.

[0030] Furthermore, the fastening unit 300 includes a spherical end 310, which is rotatably mounted on the end of the lower retaining ring 211. A threaded rod 311 is welded to the end of the spherical end 310. A locking nut 312 is threaded onto the outer surface of the threaded rod 311. When the upper retaining ring 210 and the lower retaining ring 211 are used to fix the plastic collar 115, the threaded rod 311 is controlled to be set vertically, and then the locking nut 312 is screwed onto the threaded rod 311. After the locking nut 312 is tightened, it tightly presses against the end of the upper retaining ring 210.

[0031] Furthermore, support columns 123 are welded and fixed on both sides of the bottom end of the valve body 110. The support columns 123 are symmetrically arranged, and a connecting frame 124 is welded and connected between the support columns 123. The support columns 123 support the entire device, and the connecting frame 124 plays a role in connection and reinforcement.

[0032] Furthermore, a sealing gasket 116 is fixedly installed on the outer surface of the plastic collar 115. The sealing gasket 116 is made of rubber. When the upper retaining ring 210 and the lower retaining ring 211 fix the plastic collar 115, the sealing gasket 116 is squeezed by the upper retaining ring 210 and the lower retaining ring 211 and deforms, so that the fixing effect of the upper retaining ring 210 and the lower retaining ring 211 is better.

[0033] Furthermore, a first control ear 313 is welded to one side of the locking nut 312, and a second control ear 314 is welded to the other side of the locking nut 312. When it is necessary to tighten the locking nut 312, the locking nut 312 can be controlled by the first control ear 313 and the second control ear 314. The first control ear 313 and the second control ear 314 make it convenient for the staff to apply force to the locking nut 312, thus making it convenient to use.

[0034] Working principle: When using this device, the plastic collar 115 is placed on the inspection port 112, and the locking plate 113 blocks the port of the inspection port 112. The upper retaining ring 210 and the lower retaining ring 211 are used to lock the plastic collar 115 on the inspection port 112 to fix the plastic collar 115. Since the pressure gauge body 111 is directly connected to the locking plate 113 through the connecting rod 114, during maintenance, the locking plate 113 can be removed from the inspection port 112 to bring the pressure gauge body 111 out of the inspection port 112 together. This makes it convenient and quick to take out the pressure gauge body 111 for maintenance, solving the problem that existing devices are not convenient for quickly taking out the pressure gauge body 111 from the inside of the maintenance channel for maintenance. When the upper retaining ring 210 and the lower retaining ring 211 fix the plastic collar 115, the sealing gasket 116 is compressed by the upper retaining ring 210 and the lower retaining ring 211 and deforms, making the fixing effect of the upper retaining ring 210 and the lower retaining ring 211 better. When the upper retaining ring 210 and the lower retaining ring 211 are needed to fix the plastic collar 115, the threaded rod 311 is set vertically, and then the locking nut 312 is screwed onto the threaded rod 311. After tightening, the locking nut 312 presses tightly against the end of the retaining ring 210. When it is necessary to tighten the locking nut 312, it can be controlled by the first control ear 313 and the second control ear 314. The first control ear 313 and the second control ear 314 make it convenient for the operator to apply force to the locking nut 312, thus facilitating its use. The fastening screw 119 serves to fix the top end 117 and the first flange 118, so that the device can be used stably.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A deep peak-shaving and stabilization control device for thermal power units, comprising a valve body (110) and a pressure gauge body (111); characterized in that: Both sides of the valve body (110) are provided with inspection ports (112). The pressure gauge body (111) is located inside the inspection port (112). A locking plate (113) is provided at the port of each inspection port (112). A connecting rod (114) is fixedly connected to one side of each locking plate (113). The pressure gauge body (111) is fixedly installed at the end of the connecting rod (114). A plastic collar (115) is fitted onto the outer surface of the inspection port (112). The locking plate (113) is fixedly installed on the inner wall of the plastic collar (115). All of the outer surfaces of the inspection port (112) are provided with clamping units (200). Each clamping unit (200) includes an upper clamping ring (210) and a lower clamping ring (211). A connector (212) is provided between the upper clamping ring (210) and the lower clamping ring (211). One end of the connector (212) is movably installed with the upper clamping ring (210) via a rotating shaft. The other end of the connector (212) is movably installed with the lower clamping ring (211) via a rotating shaft. A fastening unit (300) is provided at the end of the lower clamping ring (211) away from the connector (212).

2. The deep peak shaving and stabilization control device for thermal power units according to claim 1, characterized in that: The valve body (110) has a top end (117) welded and fixed to its top end. A first flange (118) is provided at the top end of the top end (117). Fastening screws (119) are evenly arranged through the outer side of the first flange (118). All fastening screws (119) are threaded into the top end (117).

3. The deep peak shaving and stabilization control device for thermal power units according to claim 2, characterized in that: Steam channels (120) are fixedly connected to both sides of the bottom of the valve body (110). A second flange (121) is welded and fixed to the outer surface of the steam channel (120). Threaded holes (122) are evenly opened on the outer side of the second flange (121).

4. The deep peak shaving and stabilization control device for thermal power units according to claim 1, characterized in that: The fastening unit (300) includes a spherical end (310), which is rotatably mounted on the end of the lower retaining ring (211). A threaded rod (311) is welded to the end of the spherical end (310), and a locking nut (312) is threaded onto the outer surface of the threaded rod (311).

5. The deep peak shaving and stabilization control device for thermal power units according to claim 3, characterized in that: The valve body (110) has support columns (123) welded and fixed on both sides of its bottom end. The support columns (123) are arranged symmetrically, and a connecting frame (124) is welded between the support columns (123).

6. The deep peak shaving and stabilization control device for thermal power units according to claim 1, characterized in that: A sealing gasket (116) is fixedly installed on the outer surface of the plastic collar (115), and the sealing gasket (116) is made of rubber.

7. The deep peak shaving and stabilization control device for thermal power units according to claim 4, characterized in that: One control lug (313) is welded to one side of the locking nut (312), and a second control lug (314) is welded to the other side of the locking nut (312).

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